What did Genghis Khan do in 1258?
A. He retreated back to China after being
defeated by the Abbasid's.
B. He added more books to the House of
Learning.
C. He surrendered to the Abbasid Caliphate
dynasty.
D. He invaded the Abbasid Caliphate empire.

D.He invaded the Abbasid Caliphate.

Explanation:

His grandson Halagu Khan marched troops in Baghdad and the house of Wisdom was destroyed. It was a big catastrophe and a huge trauma to every Muslim heart. It was The Sack of Baghdad that took place in 1258.

alliances in ww1 were different from ww2 because the entente in ww1 made up of serbia,russia,france,britan,japan and italy later america  and all allied in a sort of balance of power and too keep germany,austria-hungary,and the ottomans down. russia allied the serbians in order to exert its influence in the balkans while france allied the russians because france was still in dismay and insulted after the defeat to the germans during the unification of germany and britian allied the belgians after the germans invasion of belgium.in ww2 the alliances were in a preemptive attempt to deter any further wars into happening while germany and italy allied since they were insulted and humiliated after the previous war while also sharing a similar ideology of facsim along with japan which all 3 had a want for world domination and agreed to assist one another in the endevours 

explanation: