Roger Bacon invented the Magnifying Glass in the year 1250
1952 b.C.e.
Probable near the year 800.
1992
1040 in 9th century.
1000AD or so.
I think sometime in the 1600's
gunpowder was invented in 1232 in china
1862
China made Gunpowder in 1000 A.D. They actually made it by accident.
what year did Granville T. Woods invent the transmitter
The Greeks did not invent pizza.