Thomas Edison- Light Bulb
When it was made.
It is not known exactly when it was created, But it was pattened on January 27, 1880.
Thomas Edison propelled us out of the gas light era and into the electric. In 1878 the creation of a practical long-burning electric light had eluded scientists for decades. With dreams of lighting up entire cites, Edison lined up financial backing, assembled a group of brilliant scientists and technicians, and applied his genius to the challenge of creating an effective and affordable electric lampd the United States.
Helped light up major cities. If he did not create it we would not have light.