It is actually the Babylonians
Babylon
babylonians
metric system
Yes.
No they are not.
Yes.
Metrology
Metrics is the European system of weights and measures.
They originated from the Roman system of weights and measures
metric system
It is an international standard, and it is much easier to calculate with the metric system.
Lagrange did not invent the English System. He worked, with the French Commission for the reform of weights and measures on the International System of Weights and Measures. That is an International System and, although the majority of the world now uses it, the English cannot lay claim to it.
No, there is no connection between the two systems.