1) Mountains are formed through various geological processes, including tectonic plate movements, volcanic activity, and erosion.

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

3) The Treaty of Versailles, signed in 1919, officially ended World War I and imposed heavy penalties and reparations on Germany.

4) The Cannes Film Festival, held annually in France, is one of the most prestigious film festivals in the world.