1) Brad Pitt is an American actor and film producer. He has starred in a wide range of films, including "Fight Club," "Inglourious Basterds," and "Once Upon a Time in Hollywood," and has received critical acclaim and numerous awards for his performances.

2) The concept of sovereignty refers to the supreme authority and power of a state to govern itself, make decisions, and control its own territory without interference from external forces.

3) The word "computer" contains three vowels: O, U, and E.

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