That statement is true
When presidents are elected with popular mandate, it is very easy for the presidents to pass any laws that he/she wants because their sheer popularity would give overwhelming public support that put pressure for the opposition to conform.
Since Kennedy was elected by a slim margin, a large portion of public still oppose his policies during earlier years of his presidency. This make it easy for his opposition to limit his movement so he can't pass the policy that he wants.
Answer:
The answer is B.
Explanation:
They all had the same idea of the solar system. Back then, that would have gone against what people thought and believed in.
Corona vaccine is the important one
Answer:
The North could easily move soldiers and supplies.
Explanation:
Railroads made it so that the North could easily supply its armies with supplies and reinforcement troops.
An invasion of Japan would cost tens of thousands of American lives