Is using a comma as a number separator a cultural thing?

1. Why do Europeans use commas in numbers?
2. Why do countries use commas in numbers?
3. Do British use commas with numbers?

Why do Europeans use commas in numbers?

In the early 1700s, Gottfried Wilhelm Leibniz, a German polymath, proposed the dot as the symbol for multiplication. Therefore, most of Europe favored the comma as a decimal separator.

Why do countries use commas in numbers?

as a separator between the dollars and cents. Some countries use a comma (,) instead of a decimal to indicate that separation. In addition, while the U.S. and a number of other countries use a comma to separate thousands, some countries use a decimal point for this purpose.

Do British use commas with numbers?

The UK is the only European country to use the comma for separating large numbers in maths. Every other country uses the comma to denote a decimal mark – so what is written as 1.2 in the UK is 1,2 in the rest of the continent.