Which type of ecosystem would you expect humans to depend on the least to meet our needs for food and shelter?

The answer is alpine ecosystem, due to the fact theres very little trees and it has a lot of mountains and valleys, but it's such harsh weather(snow, etc.) it'd be hard to locate food and water, along with other vital things.

the crusades are one of the most significant events in the history of europe and the middle east.   they were a series of religious wars carried out by christian crusaders from europe during the timeframe of the middle ages.   beginning in 1095 ce, the crusades saw european knights and noblemen travel to the middle east in an attempt to capture the holy land away from muslim people that had controlled the region for the previous centuries.   the term crusade means ‘cross’.   therefore, the europeans that became crusaders viewed themselves as ‘taking up the cross’.   in fact, many of the crusaders wore crosses on their clothing and armor as they made their pilgrimage to the holy land.

explanation: