It has been a century since the United States broke its traditional continental isolationism to “Make the world safe for democracy.” On April 6, 1917, the US entered World War I and started a cascade which lead us to where we are today.
Without this event, the US Dollar would never have become the global currency, and indeed globalism would not be as closely associated with Americanism as it is everywhere but here. The American Century began on this date and ends roughly where we are today, for better or worse.
The world, as we know it, was born.