how did the cotton gin change the production of cotton?
it made it more work intensive for the slave.
it doubled the output of cotton.
it mechanized cotton seeding.
it only required four or five skilled slaves to operate the gin.

the answer is A. at first the cotton gin was supposed to make things easier for slaves. but with the cotton gin, cotton became more and more wanted which made the need of slaves raise.

monarchy doesn’t have to have the hereditary element. there have been elective monarchies in the past where you choose your king-for-life and when he dies elect someone else for the job.