USA HISTORY

Detailed explanation-1: -Humans first evolved in Africa, and much of human evolution occurred on that continent. The fossils of early humans who lived between 6 and 2 million years ago come entirely from Africa. Most scientists currently recognize some 15 to 20 different species of early humans.

Detailed explanation-2: -Southern Africa has long been considered to be one of the regions in which anatomically modern humans (AMHs) originated. Home to contemporary populations who represent the earliest human lineages, evolutionary time estimates have largely been based on mitochondrial DNA (mitogenomes)1, 6.

Detailed explanation-3: -Out of Africa or single origin model It suggested that modern humans originated in Africa within the last 200, 000 years from a single group of ancestors. Modern humans continued to evolve in Africa and had spread to the Middle East by 100, 000 years ago and possibly as early as 160, 000 years ago.

Detailed explanation-4: -Modern humans originated in Africa within the past 200, 000 years and evolved from their most likely recent common ancestor, Homo erectus, which means ‘upright man’ in Latin. Homo erectus is an extinct species of human that lived between 1.9 million and 135, 000 years ago.