Who sold the Louisiana territory to the United States
Helpp

Who is john brown and what did he do

7. how did the early egyptians use the flooding of the nile river to their advantage? they diverted the water to flood their enemy's lands and destroy their crops. they created an easier way to travel to the mediterranean sea and the indian ocean. they established a new water-based athletic event for the ancient olympics in greece. they devised an innovative irrigation system, which created a surplus of food.

Jane determines x = 4 and y = 1 is the solution to the following system of equations.