Answer:
C. Rid the Muslim world of Western influence
They snitched on the opium addicts
-Zhu Di: Emperor Yongle. He finally became a Emperor of China I believe.
-Vasco da Gama: this man was a successful Portuguese explorer. One of them was that he went from I believe it was Portugal and India. I believe that's where he went, but that one of his big achievements.
One major reason European countries engaged in imperialism in the late 19th century was to (4) obtain markets for their manufactured goods. They launched a new period of colonial expansion, thus discovering new markets.