Well, the obvious answer is that people are more mobile as they can get back and forth more easily.
Monotheism
it changed the way we think on what to do
i would say the invention of electricity it changed everything and how we did everything
yes
tesla
cause it flys
Airplanes just changed world wide trade? Oh boy.
it changed in 1798
Aryabhatta who invented 0(Zero) changed the world of mathematics
Its usually something big, like an invention that changed the world. For example, the Neolithic age started when people invented farming and domestication. That invention changed the world, and still impacts our every day lives.
Guglielmo Marconi's invention changed the world because people could communicate without wires across the seas and other places
It gave us light so we can see