Water that is not evaporated or transpired by trees is infiltrated. Infiltration is the passage of water into the soil. This water can flow through the soil or move downward. this is called percolation. Eventually water that enters the soil can become a part of the groundwater and groundwater flow and enter rivers or end up in the sea.
The answer that makes the most since is A!
I’m not sure exactly what you’re looking for, but the US spent $15m dollars and gained 54% of Mexico’s pre-1836 territory. There’s a nice article on Wikipedia called ‘Mexican Cession’ that seems helpful. Hope this is helpful :)
