March 1 - 1781 - The Articles of Confederation are Ratified
 
The Articles of Confederation and Perpetual Union did not work well at all. During the time they were the governing document of the United States of America, the government could do very little. Because the Articles of Confederation were so careful to keep certain powers with state governments, the Congress of the United States had no ability to raise taxes, raise armies, or even negotiate treaties that could work well. It was even delayed in being fully ratified during the American Revolution because Maryland required Virginia to give up specific land claims. Yet when it was ratified, the United States of America were finally unified under one government.

Which is What Happened Today, March 1, in 1781.