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

2) Cyclones, also known as hurricanes or typhoons, are powerful tropical storms characterized by low-pressure centers and strong winds.

3) Insurance premiums are the payments made by policyholders to insurance companies in exchange for coverage.

4) The Great Wall of China is not visible from space without aid, contrary to popular belief.