I think its d. because it made it a lot faster and easier to clean the seeds out of the cotton
Europe developed multiple monarchies, while China maintained a single empire.
The attack on Pearl Harborimmediately galvanized a divided nation into action. Public opinion had been moving towards support for entering the war during 1941, but considerable opposition remained until the attack. Overnight, Americansunited against the Empire of Japan inresponse to calls to "Remember Pearl Harbor."
You could say it's a 50/50
free but not 100%
More chance for trading with groups that were rich, such as Chinese and Indians, and also, the people could take land, and natural resources.