Ancient civilizations were built along rivers because the land was fertile.
Adoption from different state
Answer:
All of Africa below the Sahara practiced hunting and gathering until approximately 3000 BCE. ... It is the same reason why tons of megafauna still exist in Africa, whereas ... Africa is a beautiful and diverse continent, but it also contains many ... From 3000 BCE to 1000 BCE, the practice of farming spread across West Africa.
Explanation:
The legend, or key, is used to display what stuff means on the map. This makes it easier to spot, rivers, capitols, parks, hospitals and everything else that the map might be centralized upon. Its basically your guide to reading the map and its markings. <span />