Who was the first president of the United States

Which of the following inventions most directly allowed ancient farmers to produce a surplus ?

In 1991, which of the following split into 15 independent republics when its communist government lost power? a) china b) belarus c) germany d) soviet union

Two of these describe "federalism." (choose two answers) select one or more: a. the national government absolutely controls all state governments. b. power is shared by the national and state governments. c. state governments exercise absolute power over the national government. d. it is a compromise meant to eliminate the disadvantages of a "unitary" and a "confederate" system.