Feudalism declined during the Crusades because a. the Catholic Church called for its end.
b. many knights lost their lives and fortunes in battle.
c. the Catholic Church took control of European governments.
d. many knights decided to rise up against their kings.

Sole i will mark brainlist to who answer

The rise of advertising in the 1920s. i am good with seeing how advertisements shape the roaring twenties and how it developed a new way of life through modern days. but i am not sure what the details of advertising in the 1920s were. if possible can you send me links (preferrably credential links) to sources that maybe show like the first company to start advertising through the radio, how advertising benefits (statistics graphs), etc.

Which statement best explains how the narrator interacts with the setting? a.the setting makes him lose hope b. the setting makes him envious c. the setting makes him feel angry d. the setting makes him gain confidence the answer is a