The nile cilvilazations develop in eygpt and nubia in all the following exept

The Nile helped civilization develop in Egypt and Nubia in all of the following ways except by protecting against invasion from the west.

president thomas jefferson commissioned the expedition shortly after the louisiana purchase in 1803 to explore and to map the newly acquired territory, to find a practical route across the western half of the continent, and to establish an american presence in this territory before britain and other european powers

besides the fact that abraham lincoln abolished slavery, and greatly benefit black people, he had a heavy impact of the definition of what democracy was, and should be.