2) Agriculture:

Image Credit: Pixabay
Thanks to agriculture, human beings were able to shift their primary mode of subsistence dramatically. The mastery of cultivation allowed humans to move away from a nomadic hunter-gatherer existence and begin establishing permanent settlements. These settlements made population growth possible. Throughout history and into the present era agriculture continues to spur social and economic growth.
Tags: Agriculture Electricity Engines Fire History changing Innovations internet Inventions light bulb Metallurgy Printing press Science technology Telegraph Vaccines Wheel World Impacting