Which building began to be constructed in the 1920's? a)empire state buildingb)sears towerc)trump towersd)cnn building

Ssignment 4: contemporary issues in modern police operations and the policing due week 10 and worth 180 points select one to two (1-2) contemporary issues in modern police operations and examine the related law enforcement agencies, change, and efficiency.

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

17 points! ! (explain your answer)