How did Johannes Kepler affect the world?

He didn't change the world. He DID discover that the orbits of the planets around the Sun are ellipses rather than circles, and went a fair way to discovering the nature of gravity. Without Kepler's...

Johannes Kepler was the man who disproved Copernicus' theory that the planets orbit the sun in an circular motion. Kepler proved that the planets orbit in an oval, or ellipticall, motion.

The English phrase 'johannes kepler' means German astronomer who first stated laws of planetary motion (1571-1630)

Computers were new and weird. They caused the mail to go down a bit. Now we have email instead of letters. Computers changed the world by making operation and control systems more efficient and...

At the end many countries where in poverty. Germany had to pay a debt to the allies which ended a little before and during world war two, but continued after and still does.