Please help fast Which of these were important national issues in the 1840s and 1850s?
A. Fear of invasion from Mexico and the territories
B. Immigration and slavery
C. Financial crisis and environment
D. Highways and education

In his speech how does kennedy build his claim that the united states will defend freedom in its hour of maximum emergency? a.by arguing that the u.s. must enforce international law across the world since the united states is the lone superpower in the worldb.by demonstrating that the poverty which many people suffer from is an obstacle to true freedom  c.by stating that the u.s. will play an active role in fighting groups that are opposed to freedom, and by supporting groups that are fighting for freedom  d.by demanding that the adversaries of the united states be more willing to negotiate, or else there will be war

Do humans change their physical environment to adapt or do humans adapt themselves to their physical environment?

What is the definition of double v campaign