It is important to identify the dates of artifacts , so you can know what time period or era , it was from , and who might have made the artifacts
People of the different countries and different region who migrated and settled down in America makes the United States as a Multicultural nation.
Explanation:
United States has a long history of Migration where first the Americans (initially slaves) demanded their right to live in America properly without being discriminated on the basis of rights provided by the constitution.
After that the Germans and then Chinese, Irish and other Eastern Europeans migrated to United States. People with different culture and different religion thoughts make United States as a Multicultural nation.
While there are variations, most of South America has a hot and wet climate for much of the year.<span> The continent is situated relatively close to below the equator.</span>
Early civilizations always formed near rivers/river deltas. Rivers provide water, silt (fertile soil) which is good for farming, and transportation, as well as natural barriers (such as the cataracts-rapids-in the Nile) which protected the Egyptians from invasions/attacks. The Nile is also predictable in it's seasonal flooding (compared to other early civilizations' rivers), which was good for the Egyptians.
(All of those factors influenced the development of the Egyptian civilization.)
