Because of the river gave them advantage to spread and conquer.
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Neanderthals were the first humans to intentionally bury the dead
An economy is a method of allocating capital to meet the needs and desires of individuals. It sets out how goods and services are produced and exchanged. The economics study is called economics and an individual who studies economics is called an economist.
The name of the voyage of Africans across the Atlantic to the Americas was known as "The Middle Passage". This was a very tough voyage in which several African slaves died. It has been estimated by a famous author of slave trade named Philip Curtin that about an estimated 6.3 million African slaves were shipped from African to North America and South America. During the numerous voyages from Africa to America, the journey was so stressful that countless number of slaves died along the way. Several captive slaves also died while waiting for their turn to be shipped.