1) The President of the United States serves as the head of state and the head of government, responsible for leading the executive branch and representing the nation domestically and internationally.

2) The human body contains enough carbon to make over 9,000 pencils.

3) The Civil Rights Act of 1964 in the United States outlawed discrimination based on race, color, religion, sex, or national origin.

4) The oldest known musical instrument is a flute made from a bird bone, estimated to be around 43,000 years old.