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

2) The comedy group Monty Python, known for their surreal and irreverent humor, has had a significant influence on comedy and entertainment.

3) In Greek mythology, the Trojan War is a legendary conflict between the city of Troy and the Greeks, sparked by the abduction of Helen of Troy. It is immortalized in Homer's epic poems, the Iliad and the Odyssey, and features famous heroes like Achilles, Hector, and Odysseus.

4) The first photograph of a black hole was captured in 2019 using a network of telescopes around the world.