Question

What do you mean by metric system? Which country created it? Explain the SI units.​

Answer 1

Answer:

the decimal measuring system based on the metre, litre, and gram as units of length, capacity, and weight or mass. The system was first proposed by the French astronomer and mathematician Gabriel Mouton (1618–94) in 1670 and was standardized in Republican France in the 1790s.

Answer 2

Answer:

metric system, international decimal system of weights and measures, based on the metre for length and the kilogram for mass, that was adopted in France in 1795 and is now used officially in almost all countries.

The answer to what is SI unit is that it is an abbreviation of the French word Système International.