Although Alexander Hamilton Developed Policies to Promote Industry at the Beginning

Although Alexander Hamilton developed policies to promote industry at the beginning of the American republic's history, it was not until _______________, that the federal government began playing a central role in promoting economic growth.

A) the Civil War, which brought commerce to a halt in large swaths of the country for years
B) the late nineteenth century, when small farmers and business people began clamoring for regulation
C) the twentieth century, especially with the Great Depression and the New Deal programs created to battle it
D) the 1970s, when runaway inflation and a stagnant economy threatened American economic stability