1-Inventions – the things that changed the world.

One of the biggest invention that changed the world were; the Electricity, Penicillin, Light Bulb, Cotton Gin, The Telephone, Printing press.

In the 1440s, Johann Gutenberg invented the printing press. Before that a page was copied by hand.

Alexander Graham Bell invented the telephone. So now we can communicate with anyone in the world.

The cotton gin (A device – which pulls the seeds out of the cotton fibers quickly and easily) was invented in 1792 by Eli Whitney.

The light bulb was invented by Thomas Edison.

While most people generally attribute Benjamin Franklin as electricity discoverer, but there is not firm fact about that.

Penicillin was discovered from Alexander Fleming in 1928. He had forgotten to wash the dishes so suddenly after a period of time he saw mold on the dishes. He discovered that the mold could kill bacteria, which proved that there was an antibacterial agent in the mold.