Im 99% sure the answer is B. :)
Answer:
By allowing farmers to grow crops on a consistent schedule, irrigation also creates more reliable food supplies. Ancient civilizations in many parts of the world practiced irrigation. ... The earliest form of irrigation probably involved people carrying buckets of water from wells or rivers to pour on their crops.
The answer is: :C. It gives the courts the power to invalidate any federal or state law that they believe violates the Constitution.
By having the courts this ability, the judicial branch of the government would had the power to prevent the president of united states and the congress from establishing law that are violating the rights of citizen in united states. It is a form of a balance of power that prevent a certain people in the government from becoming too powerful.
I believe the answer is: few slaves could write down their experiences
The slaves were purchase and forced to work at plantations with no salary and barely enough time to rest. Because of this, almost all slaves were illiterates (cannot read or write). Because of this, historians found it difficult to find a writing that depict the slaves' experience during that period.
