1) The hibiscus flower is commonly associated with tropical regions and is the national flower of several countries, including Malaysia, South Korea, and Haiti.

2) The word "pizza" contains two vowels: I and A.

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

4) The most-watched television event in the United States is the Super Bowl, with millions of viewers tuning in each year.