They were successful for numerous reasons. One is that there were already a lot of Europeans there who were willing to help in the spread of Catholicism. Another is that they were mostly experienced in military conquest so if anyone actually tried to oppose the spread of Catholicism from the natives, they would be punished severely since no one could oppose the missionaries.
The right answer for the question that is being asked and shown above is that: "Food crops were abundant enough to feed all Europeans and Indians." Under British rule, all of the following were true EXCEPT Food crops were abundant enough to feed all Europeans and Indians.<span> </span>