What group of people were the original source of "Arabic" numerals and the concept of zero?

Question

Quizplus · Accepted Answer

The original source of Arabic numerals and the concept of zero can be traced back to the Indian subcontinent, where Hindu mathematicians developed the decimal system and place value notation around the 5th century AD. This system was later adopted by Islamic scholars and traders, who spread the use of Arabic numerals across the Middle East and Europe.

What Group of People Were the Original Source of "Arabic