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.

the labor movement in the united states grew out of the need to protect the common interest of workers

for those in the industrial sector organized labor unions fought for better wages reasonable hours and safer working conditions

  in the 19th century trade unionism was mainly a movement of skilled workers.

hope this

c 3 branches because idk why they had 3 well when:

you think of it there are still contrys with 3