Ahistorian is awarded a grant to study the effects of industrial air pollution on sugarcane farms in brazil. his research will focus on which major historical theme?
a. development and transformation of social structures
b. interactions between humans and the environment
c. development and interaction of cultures
d. creation, expansion, and interaction of political systems

lincoln presided over the union victory in the american civil war, which dominated his presidency. a former whig, lincoln ran on a political platform opposed to the expansion of slavery in the territories. his election served as the immediate impetus for the outbreak of the american civil war.

question 10: the answer is c, to their constituents address a problem.

question 11: i think it would be domestic bills, which deal with american issues only and public bills, which affect the whole nation.