49 BC: Julius Caesar crosses the Rubicon without disbanding his army, signalling the start of civil war in Rome.
1863: The London Underground, the world's oldest underground railway, opens between Paddington and Farringdon.
1920: The League of Nations, its convenant ratified by 42 nations, comes into being.
1863: The London Underground, the world's oldest underground railway, opens between Paddington and Farringdon.
1920: The League of Nations, its convenant ratified by 42 nations, comes into being.