Is the exclusive right of an inventor to use, or allow another to use, her or his invention?

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 caused the settlement of more african americans in the mississippi alluvial plain region then in the ozark mountains region?

Atraffic cop has pulled over a speeder, only to discover that he has stopped a close friend. the police officer is torn, because his professional obligations demand that he punish the speeder, but his personal obligations suggest that he should give a friend a break. what is this called?