During which era was entrepreneurship at its height in the United States?
Colonial America (before 1776), with entrepreneurs like Benjamin Franklin shaping the nation
First industrial revolution (1776–1865), with personal property and intellectual property rights engrained in the U.S. Constitution
Second industrial revolution (1865–1920), with technical (e.g., invention of the telephone and lightbulb) and industrial innovations (e.g., the conversion of ore to steel) propelling personal and industrial connectivity
Interwar and Postwar America (1920–1975), with the rise of the American middle-class and computer-based innovations