What is an altiplano?

The high tableland of central South America.

Explanation:

The Altiplano is a high plateau, in central South America it its about 13,000+ ft tall.

Explanation:

2686-2181 bce-- "egyptian civilization developed along the nile river in large part because the river’s annual flooding ensured reliable, rich soil for growing crops."

1069-664 bce-- "ancient egyptians developed wide-reaching trade networks along the nile, in the red sea, and in the near east."

it affected it because the kingdoms (with trade) slowly got richer and richer.