1) The Appalachian Mountains, running along the eastern coast of the United States, are one of the oldest mountain ranges in the world.

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

3) The word "umbrella" contains three vowels: U, E, and A.

4) The assassination of Archduke Franz Ferdinand of Austria in 1914 triggered the start of World War I.