When did southernization begin?

Southernization is a term that refers to the spread of cultural and economic practices originating in Southern Asia, particularly India, to other regions. It is generally considered to have begun around the 7th century CE, as Indian innovations in agriculture, mathematics, and trade began to influence neighboring regions and eventually spread to the Middle East, Africa, and Europe through trade routes. This process continued to evolve over the centuries, particularly during the medieval period.