What was the main reason immigration from mexico to the united states increased between 1900 and 1950

"but let us admit texas, and we shall place the balance of power in the hands of the texans themselves. they, with the southern states, will control the policy and the destiny of this nation; our tariff will then be held at the will of the texan advocates of free trade. are our friends of the north prepared to deliver over this great national policy to the people of texas? " - rep. joshua giddings, ohio, may 21, 1844 this quote points to what major issue in the years leading up to the civil war?

How did the us change it’s economy to provide supplies for the war effort?

Can someone me out with this , i'm putting 30 points on it