The correct answer is C. When the Europeans introduced small pox, measles, typhus, and other diseases to the New World.
The Natives did not have the same resistance to these diseases like the Europeans did, and it is said to have wiped out up to 90% of the Native population.
Taking into account this excerpt from Fitzgerald's The Great Gatsby, it can be said that East Egg residents have money passed down from generation to generation, they belong to the real elite and their houses mirror this since they have a "colonial" style with an European touch ("French windows"). As I've said, this is the case because the people living there are born into money. What is more, Tom wearing his riding clothes also says something as regards East Egg residents' lifestyle. Horseback riding is a really expensive sport which is usually related to the aristocracy.
Answer:
They were likely and move to support his cause.