What does the out of Africa theory maintain? Cro-Magnon man replaced Neanderthals who had originated in Africa remains of hominids and early humans have only been found in Africa civilizations started in Africa and spread to other parts of the world modern humans originated in Africa and migrated to other parts of the world

modern humans originated in Africa and migrated to other parts of the world.

Explanation:

The proposition "Out of Africa" is an evolutionary theory which explains that modern human has been originated from Africa about 100,000–200,000 years ago and then have migrated to different parts of the world following the late Pleistocene. The advancement of genetic analytics techniques in the 1980s exposed scientists to the hypothesis named out of Africa. The model emphasizes that while the world once inhabited by different human-like creatures, only one has evolved into modern man.

in 1862, president lincoln's emancipation proclamation opened the door for african americans to enlist in the union army. although many had wanted to join the war effort earlier, they were prohibited from enlisting by a federal law dating back to 1792.

explanation:

the federal constitution of the united mexican states of 1824 was enacted on october 4 of 1824, after the overthrow of the mexican empire of agustin de iturbide. in the new constitution, the republic took the name of of united mexican states. it was replaced by the federal constitution of the united mexican states in 1857.