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Only during World War I. For the last several hundred years, historically the "greatest period of change" has always been "right now."
period :)
science
how did his inventions change the world
Anne change from a young girl to young women during World War two.
It was "exported" by the British during the colonial period.
Sir Francis Drake
There are no light bulbs in the wizarding world.
The light bulb changed the world because people did not have to go around with a candle in differantplaces.
Economic philosophies such as capitalism and communism have been developed.
There was no World Cup in 1942 or 1946 due to World War II.
It made the dark less frightening.