China
Eurasia
Southen Asia
The Mongol Empire decided to adopt certain Chinese customs to keep the people happy under their rule. Mongols did trade with the Chinese and used the Silk Route for traiding
Jonas Salk<span> </span><span>was an American </span>medical researcher<span> and </span>virologist<span>. He discovered and developed one of the first successful </span>polio vaccines in the 1950's.
Hope I helped. :)
20 increased by 12.5% is 22.5