1. Only 45% of Americans were able to correctly identify what the initials in GOP stood for: Grand Old Party. Other popular guesses were Government of the People and God’s Own Party. Republicans obviously scored much better than Democrats did on this answer. [source]
2. 55% of Americans believe that Christianity was written into the Constitution and that the founding fathers wanted One Nation Under Jesus. This includes 75% of Republicans and Evangelicals. [source]
3. Although a “relatively” high 40% of people were able to name all three of the United States branches of government — executive, legislative and judicial — a far lower percentage knew the length of a Senator’s term. Just 25% responded that a Senator’s term stretches for six years. Even less, 20%, knew how many Senators there were. [source]
4. Americans are known to pick recent heads of state as among the best president in history, which is why Clinton and Reagan regularly rank higher than Lincoln, FDR and Washington. However, Hoover used to routinely top polls of the worst, but today, just 43% of Americans knew who he was, according to statistics from the University of Pennsylvania. [source]
5. When asked on what year 9/11 took place, 30% of Americans were unable to answer the question correctly, even as few as five years after the attack. This was according to a Washington Post poll conducted in 2006. . [source]
6. It’s not shocking that 80% of Americans believe that there is life out there somewhere, because it’s hard to look at a vast universe and think we’re completely alone. But another 1 in 5 allege that an alien life form has abducted a friend or family member of theirs, which based on population estimates of around 300 million means that a lot of fucking people have been probed. [source]
7. When looking at a map of the world, young Americans had a difficult time correctly identifying Iraq (1 in 7) and Afghanistan (17%). This isn’t that surprising, but only a slim majority (51%) knew where New York was. According to Forbes and National Geographic, an alarming 29% couldn’t point to the Pacific Ocean. [source]
8. 25% of Americans were unable to identify the country from which America gained its independence. Although 19% stated that they were unsure, Gallup findings indicated that others stated answers varying from France to China. Older folks scored much better than young people on this question, as a third of those 18-29 were unable to come up with the correct answer. [source]
9. Despite being a constant fixture in school curricula, another 30% of Americans didn’t know what the Holocaust was. Despite being some of the worst devastation in human history, Americans were unable to identify the country responsible: We were. Us. [source]
10. Even though we are a predominantly Christian country, only half of Americans knew that Judaism came before Christianity, because the words “Old Testament” are apparently very confusing in that regard. [source]
11. A surprisingly high percentage of Americans, 20%, believe that the Sun revolves around the Earth, instead of the opposite, aka. the correct answer. This is despite the fact that centuries of science have consistently proved otherwise. [source]
12. In 2011, Newsweek found that 29% of Americans were unable to correctly identify the current Vice President, Joe Biden, when asked to take a simple citizenship test. Although a relatively low 6% didn’t know when Independence Day was, a much, much higher percentage (73%) had no idea why we fought the Cold War. [source]
13. According to most polls, Americans didn’t know that Obamacare was scheduled to go into effect. Kaiser puts the number at 64%, whereas others say as few as 1 in 8. [source]
14. 2006 AP polls showed that a majority of Americans were unable to name more than one of the protections guaranteed in the first Amendment of the Constitution — which include speech, assembly, religion, press and “redress of grievance.” Just 1 in 1000 could name all of these five freedoms. However, 22% were able to come up with the name of every member of the Simpson family. [source] 
