The most important use of lead is in batteries.
It is also used as weights. Ballast in sailing ships, diving weights, car tyre balancing weights.
Also it is used as a component of some metal alloys. The most familiar of these is solder.
Lead is used in making pigments (though now it is banned in a lot of uses due to health concerns).
Wulfenite is an ore of lead and molybdenum.
some uses are for batteries, most technology, cable lines, and pencils, there is a lot more than those four but those are some important ones.
lead
in pencils in pencils
Copernicium has no uses.
Fermium hasn't uses.
Some important uses for Onyx are Gemstones, Ornamental stones, Birth stones, and Decoration.
chemistry
jewlery
Mohandas Ghandi is important in India's history because he lead something out of some place or lead some people to some place
There are many important uses for copper. Copper can be used in pipes and in wiring as a few examples.
jewelry and art