What was George Washington's biggest accomplishment as an adult?

== == That's hard to say, he had such a remarkable life. In my opinion though his achievement as general in chief, winning the War for Independence despite all the strategic disadvantages he had was the greatest and most important. His later work as president of the Constitutional Convention and President of the United States and the historical precedents he established in twice relinquishing power when he could have held it, would not have happened had he not first won that war.