Answer:
D. Between 1850 and 1870, the population of the Northern cities grew even larger due to industrialization.
The federal government is composed of three distinct branches: legislative, executive, and judicial, whose powers are vested by the U.S. Constitution in the Congress, the President, and the federal courts, respectively. Is it what you need? I doubt I can help with the other question of yours. You may check it also at Prime Writings site. They have the extended database with the articles about your topic. Hope, I helped.
The answer for 1. is A.
The answer for 2. is B.
The answer for 3. is B.
The Confederation was unable to meet its obligations because it did not have the authority to pass tariffs or to order the states to pass tariffs. As a result, it faced trade problems with countries and among states, war debts, and a weak economy.