What were the major contributions of Indians, Malays, Chinese, and Arabs to hemispheric development

Indians - india virtually clothes the entire world, cotton textiles, mathematics, numerals, and invention of zero.

Malays - most intrepid sailors of the time period, many delivered goods from South China to East Africa, spices cloves, nutmeg, & mace.

Chinese - champa rice, printing, gunpowder, Daoism, Buddhism, compass, silk improved in india, middle east, north africa and islamic spain. Discovering a silver mine as well as gold.