Meanwhile…

Soviet Union introduces the eight-hour workday through labour legislation

1917-1918

Signing of the Treaty of Versailles

1919-06-28

India includes the eight-hour workday in the Factories Act

1922

Mexican Revolution

1910-1920

Two world wars and the atomic age

1914-1945

KLM: the first permanent airline

1919-10-07

General theory of relativity published

1915

Confirmation during the solar eclipse

1919-05-29

Hubble discovers that the universe is larger than the Milky Way

1923-1925

Motor Trucks Revolutionize Road Freight

around 1920

Air Freight Takes Flight

around 1930

Salsa, tango and jive emerge from the Americas

from the late 19th century (tango) to the 1970s (salsa)

The survival of the birds

vanaf ca. 66 miljoen jaar geleden

The Anthropocene and climate change

20e-21e eeuw