Answer:
A. In first Crusade
The Crusaders attack the northern part of Jerusalem because it was the closest part of the destination to them, and to achieve 'surprise', it must be quick, and so they couldn't wait out a siege... hope this helps
They had to produce more and more crops to raise enough money to feed their families. Over time the money was cut down because of how much they produced. Kind of like clearance. They couldn't feed there families anymore so they sold or gave their farm away and moved to the city for better work
