1) The Olympic Games, originating in ancient Greece, were revived in 1896 and are now held every four years, bringing together athletes from around the world.

2) The concept of compound interest can be attributed to the ancient Babylonians, who used it in their banking practices.

3) The word "table" contains two vowels: A and E.

4) The Black Lives Matter movement, which gained prominence in 2013, advocates for racial justice and equality, addressing systemic racism and police violence against Black individuals.