Rwanda vs. Tanzania

Rwanda's fertility rate declined sharply during the last decade, as a result of the government's commitment to family planning, the increased use of contraceptives, and a downward trend in ideal family size. Increases in educational attainment, particularly among girls, and exposure to social media also contributed to the reduction in the birth rate. The average number of births per woman decreased from a 5.6 in 2005 to 4.5 in 2016. Despite these significant strides in reducing fertility, Rwanda's birth rate remains very high and will continue to for an extended period of time because of its large population entering reproductive age. Because Rwanda is one of the most densely populated countries in Africa, its persistent high population growth and increasingly small agricultural landholdings will put additional strain on families' ability to raise foodstuffs and access potable water. These conditions will also hinder the government's efforts to reduce poverty and prevent environmental degradation.

The UNHCR recommended that effective 30 June 2013 countries invoke a cessation of refugee status for those Rwandans who fled their homeland between 1959 and 1998, including the 1994 genocide, on the grounds that the conditions that drove them to seek protection abroad no longer exist. The UNHCR's decision is controversial because many Rwandan refugees still fear persecution if they return home, concerns that are supported by the number of Rwandans granted asylum since 1998 and by the number exempted from the cessation. Rwandan refugees can still seek an exemption or local integration, but host countries are anxious to send the refugees back to Rwanda and are likely to avoid options that enable them to stay. Conversely, Rwanda itself hosts almost 160,000 refugees as of 2017; virtually all of them fleeing conflict in neighboring Burundi and the Democratic Republic of the Congo.

Tanzania has the largest population in East Africa and the lowest population density; almost a third of the population is urban. Tanzania's youthful population - about two-thirds of the population is under 25 - is growing rapidly because of the high total fertility rate of 4.8 children per woman. Progress in reducing the birth rate has stalled, sustaining the country's nearly 3% annual growth. The maternal mortality rate has improved since 2000, yet it remains very high because of early and frequent pregnancies, inadequate maternal health services, and a lack of skilled birth attendants - problems that are worse among poor and rural women. Tanzania has made strides in reducing under-5 and infant mortality rates, but a recent drop in immunization threatens to undermine gains in child health. Malaria is a leading killer of children under 5, while HIV is the main source of adult mortality

For Tanzania, most migration is internal, rural to urban movement, while some temporary labor migration from towns to plantations takes place seasonally for harvests. Tanzania was Africa's largest refugee-hosting country for decades, hosting hundreds of thousands of refugees from the Great Lakes region, primarily Burundi, over the last fifty years. However, the assisted repatriation and naturalization of tens of thousands of Burundian refugees between 2002 and 2014 dramatically reduced the refugee population. Tanzania is increasingly a transit country for illegal migrants from the Horn of Africa and the Great Lakes region who are heading to southern Africa for security reasons and/or economic opportunities. Some of these migrants choose to settle in Tanzania.