The earth completes one revolution every

Every 365 days. One revolution = one year, and a fun fact is that scientists started to know the earth was moving in the beginning of the 16th century. :-)

How many miles is each lap?

Africans learned what the europeans wanted them to learn. instead of learning about african history and current information that could and would them they learned solely what europe wanted them to. and not everyone received the same education, some received better and others none.