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

2) The national animal of Australia is the kangaroo.

3) The world's oldest known living tree is a bristlecone pine named "Methuselah" in California, estimated to be over 4,800 years old.

4) The concept of separation of powers, as articulated by French philosopher Montesquieu, refers to the division of government responsibilities into distinct branches, such as the executive, legislative, and judicial, to prevent concentration of power.