Population has been rising quickly within the past few centuries. Why, specifically, do some say that it will naturally stop? (2-4 sentences) *

Change is so fast, many of our larger animals simply don't have time to adapt. Scientists at Southampton University say a combination of poaching, habitat loss, pollution and climate change will cause more than 1,000 larger species of mammals and birds to become extinct over the next century.

1- High religious fervor, usually in the form of violence specifically towards Jews and Muslims.

2- Split and decentralized internal factions - usually a crusade would consist of several separate armies compromising of different ethnicities which would usually bash heads with each other. Note: Led to the formation of multiple crusader states such as Principality of Antioch, Kingdom of Jerusalem, Country of Edessa, etc ...

3- Usually led by minor and regional nobles seeking glory and the establishment of their own fiefdom. Typically 2nd or 3rd sons who would not get the family inheritance.

Explanation: