Discover
The identity of the nation
Tanzania was born from the union of two distinct histories. The mainland territory, called Tanganyika, gained independence from the United Kingdom in 1961. Zanzibar, the archipelago in the Indian Ocean, became independent in 1963 and soon experienced a popular revolution. In 1964 the two united to form the United Republic of Tanzania. This dual origin still marks the country today: the interior is majority Christian, while the coast and the islands of Zanzibar are majority Muslim, shaped by centuries of trade with Arabia, Persia, and India.
Christianity spread through the country’s interior over the 19th and 20th centuries and found fertile ground among peoples such as the Chagga, the Haya, and the Sukuma. Today Tanzania has one of the largest Christian populations in East Africa, with well established Catholic, Lutheran, Anglican, and Pentecostal churches, along with revival movements that have swept the country since the 1930s, bringing spiritual renewal to many communities.
Despite the large number of Christians, Tanzania’s missionary challenge has two very different fronts. On the coast and in Zanzibar, Islam predominates, and anyone who leaves Islam to follow Jesus risks being rejected by their own family and community. In the interior, although the majority identify as Christian, many peoples still live out a faith mixed with traditional beliefs in spirits and ancestors, and more than two dozen ethnic groups remain little or unreached by the gospel, such as the Alagwa and the Bajuni.
The nation also carries a notable heritage of public faith: the country’s first president himself was known for his personal religious devotion and for seeking to unite Christian values with the building of the new nation, at a time when Tanzania chose its own path of development based on communal ideals. This heritage coexists, however, with real challenges: poverty, witchcraft, tribalism, and a Christianity that is sometimes more cultural than transformative.
Today Tanzania follows a path of economic growth and relative stability in the region, but religious freedom faces growing pressure, especially for Christians who come from Islam in Zanzibar and on the coast. It is a country where the church is already large in number, but where there is still much room for faith to grow deeper and for the gospel to reach the peoples who have not yet heard it.
- 9th-15th centuries Arab and Persian traders settle on the coast, giving rise to Swahili culture and language
- 1498 Portuguese navigators reach the region's coast
- 1890 The mainland territory (Tanganyika) becomes a German colony
- 1919 After World War I, the United Kingdom takes control of Tanganyika
- 1961 Tanganyika gains independence from the United Kingdom
- 1963 Zanzibar becomes independent as a monarchy under a sultan
- 1964 A revolution in Zanzibar overthrows the sultan; Tanganyika and Zanzibar unite to form Tanzania
- 1967 The country adopts the Arusha Declaration and a policy of African socialism (Ujamaa)
- 1990s Opening to multiparty politics and market economic reforms
- Today Tanzania is one of the fastest growing economies in East Africa, with great religious and ethnic diversity
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Swahili (Kiswahili)National and most widely spoken language, used in trade, basic education, and daily life
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EnglishSecond official language, used in higher education, courts, and international business
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Local Bantu languagesSpoken by peoples such as the Sukuma, Nyamwezi, Chagga, and Haya, usually at home and in the village
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MaaNilotic language spoken by the Maasai people, on the northern plains
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Cushitic languagesSpoken by smaller peoples, such as the Alagwa and the Iraqw, in the central region
Tanzania sits on the Indian Ocean coast in East Africa, bordering Kenya, Uganda, Rwanda, Burundi, the Democratic Republic of the Congo, Zambia, Malawi, and Mozambique. The country is home to Mount Kilimanjaro, the highest point in Africa, and much of the Serengeti, one of the world's most famous savannas. Tanzania also includes the Zanzibar archipelago, made up of several islands in the Indian Ocean. Its territory also includes stretches of Lake Victoria, Lake Tanganyika, and Lake Nyasa, three of Africa's largest lakes.
Major cities
- DodomaOfficial capital, seat of government and parliament, in the interior
- Dar es SalaamLargest city and main port, the country's economic and financial center
- ArushaGateway to the Serengeti and Kilimanjaro, home to international organizations
- MwanzaSecond largest city, on the shores of Lake Victoria, a fishing and trade hub
- Zanzibar (Zanzibar City)Historic island city with Stone Town, a center of the spice trade and Swahili culture
- MorogoroAgricultural and university town at the foot of the Uluguru mountains
Climate and temperature
Ugali
A kind of polenta made from corn flour, served with almost every meal
Nyama choma
Grilled meat, beef, goat, or chicken, traditional at parties and family gatherings
Pilau
Rice seasoned with cinnamon, cloves, and other spices, prepared for special occasions
Mandazi
A type of fried bun, lightly sweetened, common for breakfast
Samaki wa kupaka
Grilled fish with coconut milk and spice sauce, typical of the coast and Zanzibar
Chapati
Flatbread cooked in a pan, of Indian origin, common at breakfast and dinner
Understand
Culture and spirituality
2a · The culture
Stone Town (Zanzibar)
Zanzibar's historic center, with architecture blending Arab, Indian, and African influences, recognized by Unesco
Mount Kilimanjaro
Africa's highest mountain, snow capped even near the equator, a symbol of the country
Serengeti and the great migration
Savanna famous for the annual migration of millions of wildebeest and zebras
Maasai culture
Cattle herding people known for their red garments (shuka) and colorful beaded jewelry
Ruins of Kilwa Kisiwani
Former Swahili trading center that linked Africa to the Middle East and Asia
Spice islands
Zanzibar has centuries of tradition in the trade of cloves, cinnamon, and nutmeg
- Using the left hand In many regions the left hand is considered unclean; use the right hand for eating, greeting, and handing over objects
- Short or low cut clothing On the coast and in Zanzibar, majority Muslim, dress modestly, covering shoulders and knees
- Eating in public during Ramadan During the Muslim fasting month, avoid eating, drinking, or smoking in public during the day in majority Muslim areas
- Photographing people without asking permission Many, especially the Maasai, consider it disrespectful to be photographed without consent
- Openly criticizing the government Political matters can be sensitive; avoid critical comments with strangers
- Public displays of affection Romantic kissing and hugging in public are seen as inappropriate
2b · The field
Areas of spiritual battle and cultural captivity to cover in prayer. Tap each point to understand:
Belief in sorcerers and in the power to curse or protect remains strong in many communities, including among nominal Christians
Many peoples practice ethnic religions centered on the fear and need to appease the spirits of ancestors
On the coast and in Zanzibar, Islam shapes local laws and social life, making conversion to Christianity risky
It is common to mix Christian practices with traditional beliefs, without truly breaking from old rituals
In growing cities, the desire for quick money and status fuels corruption and a new form of idolatry
Seeking out traditional healers instead of prayer reveals a search for spiritual power outside of God
Rivalries between ethnic groups still generate mistrust and hinder unity among the churches
The idea that poverty and disease are an unchangeable fate, leaving no room for hope of transformation
Many call themselves Christian out of family tradition, without a personal, living faith in Christ
In several ethnic groups, marriages with more than one wife are still common and challenge biblical teaching on family
In Tanzania, Christians’ experience varies greatly by region. In the interior, where most of the population identifies as Christian, religious freedom is broad and the church coexists peacefully with the state. On the coast and, especially, in Zanzibar, which is majority Muslim, the situation is quite different: anyone who leaves Islam to follow Jesus risks being thrown out of their home, rejected by their own family, and isolated from the community.
In Zanzibar, local authorities have quietly closed churches, made it difficult to open new places of worship, and pressured pastors to leave the island. Cases of violence against Christian gatherings, including acid attacks and explosions recorded in previous years, show that religious tension on the island can become concrete and dangerous. In 2026, Tanzania rose in the ranking of countries that persecute Christians the most, reflecting increased pressure, especially in Zanzibar and in national public life.
Beyond the directly religious context, poverty, tribalism, and a still strong belief in witchcraft also make life difficult for the church in some regions, making discipleship more superficial in communities that mix Christian faith with traditional practices.
The persecution score runs from 0 to 100: the higher it is, the greater the pressure on Christians.
Tanzania has 154 catalogued ethnic groups, one of the highest numbers in Africa. Of these, 24 peoples are still considered unreached by the gospel, most concentrated in the country's dry interior and among groups of Muslim tradition on the coast, such as the Alagwa and the Bajuni. At the same time, peoples such as the Sukuma, the country's largest ethnic group, already have a significant Christian presence, though still marked by heavy mixing with traditional beliefs.
- 6.3M Unreached 9%
- 1.1M Minimally reached 1,6%
- 561K Superficially reached 0,8%
- 18.6M Partially reached 26,5%
- 43.6M Significantly reached 62%
- 24 Unreached 15,6%
- 10 Minimally reached 6,5%
- 6 Superficially reached 3,9%
- 52 Partially reached 33,8%
- 62 Significantly reached 40,3%
Source of people group data: Joshua Project (joshuaproject.net). Estimates, may vary.
Somali Frontier
Gujarati Frontier
Alagwa Frontier
Kacchi
Swahili bajuni
Dhaiso
Mijikenda, Digo Frontier
Source: Joshua Project. Estimates, may vary.
Pray
Intercede for this nation
Every nation carries a redemptive purpose. Marks that seem woven into the identity God desires to restore:
Go
Practical details for those who want to go
Local time
Cost of living
Average price of a basic meal at a popular restaurant
Cost by city
Reference values (source: Numbeo). Confirm before traveling.
Practical points for those who go
- Swahili is the everyday language; basic phrases like "Habari?" (how are you?) and "Asante" (thank you) open doors
- Bring light, modest clothing, covering shoulders and knees, especially outside hotels and resorts
- Use your right hand for eating, greeting, and handing over objects; the left is considered improper
- Negotiate market prices; haggling is normal and expected outside fixed price shops
- Bring repellent and preventive malaria medication, still present in several regions
- Ask permission before photographing people, especially the Maasai
- During Ramadan, be discreet about eating or drinking in public in majority Muslim areas
- The elderly are highly respected; greet them first, using "Mzee" for men and "Mama" for older women
Send and sustain
Not everyone goes, everyone takes part
Not everyone goes. Everyone takes part.
Behind every worker among these peoples stands a network of people who pray without ceasing, care for the family left behind, and faithfully sustain the work. Sending is mission too.
Start with your church: introduce this nation, adopt it in ongoing prayer, and walk alongside those God is raising up to go.