Answer:
1.This map is showing migrational patterns of early humans to the americas.
2. Early peoples may have had different reasons to move, ranging from finding new sources of food to looking for a new home simply to explore.
3. They may have had to move because of tribal disputes, lack of food or suitable habitat, or natural disaster.
4. Early people moved most likely because they wanted to, as a large majority of the world still lives in asia and europe, the places where early people would be migrating from.
5. If someone or a group of people move from one area to another, massive changes can take place. Ecosystems regrow, other people take the land, disputes over territory arise, etc;
Step-by-step explanation:
I think i explained it fairly well already. Hope this helps! :P