This statesman, politican, scholar, inventor, and one of early presidents of USA

This statesman, politican, scholar, inventor, and one of early presidents of USA invented the swivel chair, the spherical sundial, the moldboard plow, and the cipher wheel.

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1) When was Monopoly created?

2) Until Victorian times, chocolate was thought of as a drink. When did the first chocolate bar appear?

3) What J. B. Dunlop invented?

4) What device for new parents did Ann Moore invent in 1969?

5) Benjamin Franklin was a prolific inventor. He invented the lightning rod, the Franklin stove, studied electricity, discovered the Gulf Stream, started the first library, and on and on. Among his many other inventions, what musical instrument did he invent?