What is the contribution of system of numeration?

Answer 1

Without a system of numeration it would be impossible to count things. The Roman system was by no means the best, but their empire was extensive thus it became the dominant numeric form throughout most of Europe. Fortunately, the Hindu-Arabic numeral system was developing in India during the same period and, due to its base-10, positional nature, it gradually replaced the Roman system until it became the dominant form in the 16th century. There were other systems, including those that pre-dated the Roman method, however none could compete with Hindu-Arabic in terms of both notation and in computation.