How did cataracts affect Egypt and Nubia?

Why did river valleys most farming impact the lives of neolithic peoples?

Why did european nations face financial challenges after world war 1?

Which of the following are details about the compromise of 1877? election results in a couple of states were in dispute and too close to call. samuel tilden would be given the win in exchange for the removal of federal troops. the presidential election was close between rutherford hayes and ulysses grant. it was agreed troops would leave the south in exchange for a hayes victory.