Which of the following was a primary cause of the other three?

huh

Explanation:

huh. . . . . . . huh huh huh huh

(4) European involvement in the Crusades

Explanation:

The other points which are given in the question are the situations which had happened because the Europeans had involved them selves in the crusades.

The effects of this involvement was the development of the middle class in the society. It also led to the increase in the demand of the eastern goods by the people of Europe.

More over the people of Europe had developed new interest in learning. All this had happened because the Europeans had involved themselves in the crusades.

thing is, i'm afraid, you can't.

the most you can do is log out and never log in again.

  the common sense as a pamphlet written by thomas paine. it promoted the independence of the colonies from british rule. the distribution of this pamphlet was great, it reached people everywhere and it was even read aloud at places people met. it also unite the colonists before the revolutionary war.

answer is d