Because u need the light element
Answer:
The Mexican Revolution (1910-1920) then increased the flow: war refugees and political exiles fled to the United States to escape the violence. Mexicans also left rural areas in search of stability and employment. As a result, Mexican migration to the United States rose sharply
Explanation:
A: it Encourage people to use the sea for food and trade!
<span>hey dug irrigation ditches from the river to their fields so they could bring water to
their crops.</span>