Like when you read up on history..hundreds of years would pass without that much advancement but now in the last 100-150 years things changed so much.
Why?
In: Technology
The arrival of the industrial age in the 19th century set off a chain of events.
Industrialization meant that people could spend less time farming and just barely surviving. People migrated to cities to work in factories en-mass.
Having people living closer together led to more people getting educated.
Research in this time led to the invention of Electricity, modern physics, and steam power. Steam engine technology was later adapted into gas engines. Humans no longer had to rely on just Horse power and Ox power to get things moving.
Come the 20th century WW1 and WW2 led to the greatest leaps of technological development. A state of total war where much of the worlds economy was transformed into a weapon of war.
Funding for Research and Development of new technology was basically unlimited and the price of losing the war so high that people were willing to look the other way in terms of safety and human experimentation.
After the war a significant amount of surplus hit the market. Farmers suddenly buy military trucks for cheap to replace horses.
Then came the space race. The US and the USSR trying to out-spend each other during the cold war to get a man on the moon.
Many if not most of the technological developments that define the 20th century were derived from these events. Mass production of cars, computers, jet airplanes, radar and radio, nuclear power, and velcro.
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