History of America: Content. Pre-Columbian Era (Before 1492) European Exploration and Colonization (1492-1776) American Revolution and Independence (1765-1783) Early Republic and Westward Expansion (1783-1860) Civil War and Reconstruction (1861-1877) Industrialization and Progressive Era (Late 19th to Early 20th Century) History . The history of America is a vast and complex subject, spanning thousands of years of human habitation and development. I'll provide a condensed overview of the major periods and events in American history, but please note that this summary cannot cover all details and nuances. Let's begin: Map of America Pre-Columbian Era (Before 1492): The Americas were inhabited by indigenous peoples, including diverse civilizations such as the Mayans, Aztecs, Incas, and numerous Native American tribes. The pre Columbian Era These civilizations developed advanced cultures, agriculture, trade networks, and architectural achievements. European Exploration and Colonization (1492-1776): Christopher Columbus, sailing for Spain, reached the Americas in 1492, beginning an era of European exploration and colonization.