What does diplomacy mean in an easy to understand definition?

Which of the following was a goal of european conservation in the early 1800

The mongols were descendants of a. pastoral nomadic tribes b. tibetan tribes c. shang nobility

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.