Is This the Most Important Date in U.S. History?

A video from Prager University:

Course Description: What was perhaps the most decisive date in American history? Was it the date of our founding? Pearl Harbor? September 11 ? Try July 28, 1588 — the date of the defeat of the Spanish Armada. What was the Spanish Armada? And why does it matter? In this week’s video, Richard McMillan, Professor of History at Pierce College in Los Angeles, teaches a five-minute lesson on how a war on the other side of the Atlantic Ocean laid the groundwork for America’s founding.