1) The United States recently held its presidential election in 2020, resulting in Joe Biden being elected as the 46th President of the United States and Kamala Harris as the Vice President, making history as the first female Vice President.

2) The avocado, native to Central and South America, is a versatile fruit known for its creamy texture and nutritional benefits. Avocados are rich in healthy fats, fiber, and vitamins, making them a popular ingredient in salads, sandwiches, guacamole, and smoothies. They have gained significant popularity in recent years, becoming a staple in healthy eating and plant-based diets.

3) The Federal Reserve System, often referred to as the Fed, is the central banking system of the United States.

4) The highest-grossing film of all time is "Avengers: Endgame," which has earned over $2.79 billion at the global box office.