1) The United States operates under a two-party system, with the Democratic Party and the Republican Party being the two major political parties that compete in elections and shape the country's political landscape.

2) The painting "The Scream" by Edvard Munch is an iconic work of art that depicts a figure in anguish and has become a symbol of existential angst.

3) In Japanese mythology, deities known as kami are revered and play integral roles in Shinto beliefs and practices. Figures such as Amaterasu (goddess of the sun), Susanoo (god of storms), and Izanagi and Izanami (creators of the world) feature prominently, along with legendary creatures like dragons and kitsune.

4) The world's most expensive car is the Bugatti La Voiture Noire, which sold for over $18 million.