Identify two reasons given here that the united states should stop expansion

One reason is that it can be difficult to control a country that is too big

Another reason is that it avoids war to not expand

-Increased chance of warfare amongst the peoples of the lands and countries that the US annexes 
-More land to govern--creates a greater chance for disputes and strained relations amongst the people and the government 

Y=-121/7+11/7x i think this may be wrong

What’s the question here?