The information shown on the electoral map supports which of the following conclusions about American politics in 1860? A. Many Americans refused to participate in national elections because of heightened regional tensions.
B. States with similar laws regarding slavery tended to vote for the same presidential candidate.
C. Newly admitted western states were much more politically diverse than older eastern states.
D. Support for presidential candidates was widely varied within large geographic regions.

b - states with similar laws regarding slavery tended to vote for the same presidential candidate

Explanation:

i took the quiz

B. States with similar laws regarding slavery tended to vote for the same presidential candidate.

Explanation:

a peace conference held after the surrender of japan

an international conference held near the end of world war ii

a meeting of the victorious nations after the defeat of germany

a summit meeting between the united states and the soviet union

the causes of the dust bowls were severe droughts,   lands became dry and hard, temperature was higher than usual, hot and dry conditions killed crops, high winds. because of those factors, the winds kicked up dry soil and created clouds of dust.