electricity
iron alloys
electricity iron alloys
The electric lightbulb.
yes
Invented the light bulb. Helped work places stay open longer and safer with invention.
A way to make large Quantities of Steel in A gas Furnace
the invention of the printing press
It was the invention and usage of a zero symbol
As I sat thinking about your question I couldn't come up with an invention that truly helped Polo. It is possible that he used a compass that his father would have brought back from China on one of his trips. After Polo returned to Venice, Italy from his years in China he did write a book and it is possible that the invention of the printing press would have also helped by getting his story out. He came before some of the inventions and improvements in sailing that would have helped him and his maps would have been very basic not showing items that explorers found later on ( including himself). Gunpowder that he brought back from China may have helped him since he did fight in a war after he returned to Italy.
it helped it a lot
William Jenney
electron microscope
Records and Radios