Answer: D
It allowed sailors to know their direction.
Explanation: its obviously not any of the others and compasses tell direction
The introduction of the cotton gin by Eli Whitney had a great effect on the plantations, as well as slavery. Before the cotton gin was invented, the production of cotton was a… painstaking business. To remove the cotton fiber from the seeds took a great amount of time.
Answer:
Controlling fire is important because not doing so can cause even more catastrophic damage than has already been done. Take California historically, for example. In the past, they've had millions of acres destroyed by wildfires, and that was while they were being contained. Imagine if they weren't, How much more *could* it have done?
The conditions barely changed for the better. Child labor got somewhat better but not by a lot.
Answer:
plessy vs Fergusons decision in a 7 to 1 decision is segregation is constitutional. brown vs board of education decided in a unanimous decision that segregation is unconstitutional. miranda vs Arizona decide in a 5 to 4 decision that an accused persons 5th amendment rights must be protected
