1) The word "yesterday" contains three vowels: E, A, and A.

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

3) The invention of the printing press by Johannes Gutenberg in the 15th century revolutionized the spread of knowledge and played a key role in the Renaissance.

4) Insurance fraud occurs when individuals or organizations deliberately deceive insurance companies to receive undeserved benefits.