How did the crusades contribute to the decline of feudalism?

a. they increased trade with the middle east, and at the same time saw more people resettle in prosperous cities, or leave the countryside.
b. they allowed the ottoman turks to invade europe and destroy the feudal system.
c. they ended up costing so much money that lords could no longer afford to pay for their manors and had to sell them.
d. they destroyed the power of kings, meaning the feudal system broke down.

Which of the following scenarios best shows the relationship between personal and civic responsibility? tara stays home on friday night to babysit her sister instead of going to a movie with her friends. theo asks neighbors to sign a petition asking the city council to lower the speed limit in their neighborhood to make it safer for children. natalie watches a presidential debate with her parents in order to complete a homework assignment for school. nick’s scout troop adopts a section of highway in their community to keep free from litter.