Earliest human migrations and expansions of archaic and modern humans across continents began 2 million years ago with the migration out of Africa of Homo erectus. This was followed by the migrations of other pre-modern humans including H. heidelbergensis, the likely ancestor of both modern humans and Neanderthals. Finally, Homo sapiens ventured out of Africa around 100,000 years ago, spread across Asia around 60,000 years ago and arrived on new continents and islands since then.
Knowledge of early human migrations, a major topic of archeology, has been achieved by the study of human fossils, occasionally by stone-age artifacts and more recently has been assisted by archaeogenetics. Cultural and ethnic migrations are estimated by combining archaeogenetics and comparative linguistics.
the answer is B The West has a variety of climates and many different biomes.
Explanation:Trade has always been a vital aspect of any civilization whether at the local or international level. However many goods one has, whether as an individual, a community, or a country, there will always be something one lacks and will need to purchase through trade with another. Ancient Egypt was a country rich in many natural resources but still was not self-sufficient and so had to rely on trade for necessary goods and luxuries.
Trade began in the Predynastic Period in Egypt (c. 6000 - c. 3150 BCE) and continued through Roman Egypt (30 BCE-646 CE). For most of its history, ancient Egypt's economy operated on a barter system without cash. It was not until the Persian Invasion of 525 BCE that a cash economy was instituted in the country. Prior to this time, trade flourished through an exchange of goods and services based on a standard of value both parties considered fair.
The african american because the american didnt like them