Top 5 Inventions That Changed The World

Top 5 Inventions That Changed The World
Humans have invented some incredible — and sometimes unconventional — inventions. Several key advancements stand out as particularly revolutionary, from the time someone bashed a rock on the ground to form the first sharp-edged tool, through the introduction of the wheel, to the invention of Mars rovers and the Internet. Here are our top picks for the most important inventions of all time

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