America was founded as an independent country in which year?

1776

The correct answer is Option 1 - 1776

America was founded as an independent country in 1776.

The 9/11 attacks killed nearly three thousand persons. In terms of their shocking effect on Americans, they have been compared to the British burning of Washington, DC in 1814 and the Japanese attack on Pearl Harbour in 1941. However, in terms of loss of life, 9/11 was the most severe attack on US soil since the founding of the country in 1776.