he did not invent nor learn it he introduced it to the united states
The decimal system!
There were several life changing experiences in Thomas Jefferson's life. These include authoring the original declaration of independence, introducing the decimal system to the United States, and becoming President of the United States.
Jefferson designed a decimal system for weights and measures which was proposed to Congress before the metric system (The SI system) which is now used throughout the world. He also devised a decimal system for the currency based on the Spanish dollar. The former was rejected by Congress and the US stuck to the clumsy British system, adding some further problems by redefining a gallon and so on. The US is one of a handful of countries still stuck with the Imperial system though it did adopt the decimal currency in 1792.
thomas jefferson
(14th century BCE) - 2300
It was Jefferson.
Thomas Jefferson
Decienl
Thomas Jefferson was greatly opposed to a centralized system of government as he saw many demerits with it. He advocated for a decentralized agrarian republic instead.
Thomas Jefferson, mostly.
Alexander Hamilton and Thomas Jefferson
Thomas Jefferson invented the Jefferson Disk as a cipher system.