Wikipedia:Selected anniversaries/December 30

December 30: Rizal Day in the Philippines.

• 1853 – Gadsden Purchase: The United States bought approximately 29,600 square miles (77,000 km²) of land south of the Gila River and west of the Rio Grande from Mexico for US$10 million.

• 1896 – Philippine Revolution: Nationalist José Rizal (pictured) was executed by a firing squad in Manila after Spanish authorities convicted him of rebellion, sedition, and conspiracy.

• 1922 – The Treaty on the Creation of the USSR, legalizing the creation of a union of several Soviet republics in the form of the Union of Soviet Socialist Republics, was ratified.

• 1927 – The Ginza Line, the oldest underground subway line in the Far East, opened in Tokyo.

• 1947 – King Michael I was forced to abdicate as Romania became a People's Republic.

More anniversaries:

• December 29
• December 30
• December 31