Which policy resembles our foreign policy or diplomacy today? Why?

In exchange for land, a knight agrees to be a sort of sub-vassal to a vassal. this agreement was known as: investiture homage tyranny subinfeudation

What trade did europeans want most before the 1800s ivory wood slaves gold

Research the practice of key logging in current literature. describe what it is and explain why some people defend the practice, while others do not. finally, give your own opinion and defend it. cite your sources.