How were early civilizations in the Americas, Africa, and Europe both similar and different."

Early civilization were similar because humans on different continents both attempt to adapt to their surroundings and survived. They are different because there are different locations which could make it harder to adapt like in a col,  desert, or in a rainforest. Depending on the climate is what makes it different. I would REALLY appreciate it if you can mark this answer the brainliest.

the awnser is a

it is not b or c