The answer to yesterday's question is: it depends.
The battles of Lexington and Concord: April 1775.
Independence declared: July 1776.
Battle of Yorktown: 1781.
Treaty of Paris: 1783.
There are two reasonable starting dates and two reasonable ending dates. You decide!
Today we dock, rush to Heathrow, and jet off to Reykjavik. Today's question is: In what year did Iceland become independent?
Bonus question: from which country?