The first transatlantic flight by a navy seaplane was completed in 1919.
The first non-stop transatlantic flight was completed in 1919 by John Alcock and Arthur Brown.
The first professional baseball game was broadcast on the radio in 1919.
The 1919 World Series, between the Chicago White Sox and the Cincinnati Reds, was marred by scandal when eight White Sox players were accused of intentionally losing the series.
The Grand Canyon National Park was established in 1919.
The 19th Amendment to the U.S. Constitution, which granted women the right to vote, was ratified in 1919.
The Treaty of Versailles was signed on June 28, 1919, officially ending World War I.
The League of Nations was established on January 10, 1919, with the goal of maintaining peace between nations.
The American Legion, a veterans' organization, was founded in 1919.
The first commercial radio station, KDKA, began broadcasting in 1919.
The 18th Amendment to the U.S. Constitution was passed, which prohibited the sale, manufacture, and transportation of alcohol in the United States.
The League of Nations was founded, which was the first international organization whose principal mission was to maintain world peace.
The National Socialist German Workers' Party, more commonly known as the Nazi Party, was formed in Germany.
The General Strike in Seattle, Washington, was a five-day general strike by more than 65,000 workers in Seattle, Washington.
The Amritsar Massacre in British India, when British troops killed hundreds of unarmed Indian demonstrators.
Women's right to vote was granted in many countries, like Canada, the US, Germany and the UK among others.