Final answer:
The conclusion from the historical examples of Somalia, Ethiopia, Iraq, Yugoslavia, and Rwanda is that a variety of political, economic, and social factors can provoke human migration, leading to substantial numbers of refugees seeking safety and stability.
Step-by-step explanation:
In the examples of Somalia, Ethiopia, Iraq, Yugoslavia, and Rwanda during the 1990s, the common thread is that all experienced significant turmoil that led to the mass movement of people. These situations, marked by civil wars, drought, famine, ethnic conflicts, and political upheaval, highlight that a variety of political, economic, and social factors can lead to human migration. People flee their homelands to seek safety and stability, often resulting in significant refugee populations in neighboring countries or even distant regions.
It is evident from these examples that political instability, ethnic tensions, environmental challenges, and violence contribute to large-scale displacement and the diaspora of people. This trend continues in modern times with ongoing conflicts and crises leading to migration. The movements are not confined to shifting populations within a country, but often extend across borders, affecting international relations, economies, and societal structures.
The conclusion that can be drawn from these four examples is B. Political, economic, and social factors can lead to human migration, rather than just wars in Africa being particularly violent or ethnic wars no longer troubling the world or internal migration being the primary focus.