Answer:
One justification: "Mexico attacked us first." In April of 1846, Mexican cavalry attacked U.S. soldiers in a disputed area and killed about a dozen. This justified America's declaration of war in some's eyes.
Argument against: "Mexico only attacked us because we goaded them into it." Opponents to war said that Polk intentionally placed U.S. soldiers in the disputed zone so that Mexico would attack them.
The answer is A because there was no longer a need for slavery because of the Emancipation Proclamation
Answer:
The aircraft is gaining altitude at 
Explanation:
Draw a vector diagram. (Right angle triangle speed as the hypotenuse)
Let
x -----> horizontal component of the speed
y ----> vertical component of the speed
s ----> speed in miles per hour
we know that


we have



substitute




therefore
The aircraft is gaining altitude at 
By explaining it step by step and by how it will help him heal