We declared independence from Great Britain in 1776?

Every year Marist does a poll to see how much Americans know about the day we became our own country. And as is the current trend, Americans don't know jack about the history of their own country. When asked what country we declared independence from, 76% said Great Britain, 19% didn't know, and 5% listed a different country. When broken down by age, only 67% of those 30 years old and younger knew the right answer. When asked about the year we declared independence, only 58% correctly said 1776, while 26% didn't know and 16% gave a different year. When broken down by age, only 31% of those 30 and younger knew. This makes me worried and sick. This only proves that history needs more focus in school because as Winston Churchill said, "Those who fail to learn from history are doomed to repeat it."