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
cause it flys
Airplanes just changed world wide trade? Oh boy.
yes
tesla
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
Before World War 1, airplanes were used for recreation. However, during World War 1 airplanes were used for reconnaissance and spying on the enemies. Airplanes were also used as fighter jets and as bombers. Airplanes changed warfare greatly and allowed for blitz attacks and air warfare.