Lack of natural resources
Answer:
C. both religious groups often tried to force conversion.
I believe it is existentialism but I'm not sure. It could also be nihilism or objectivism depending on which philosopher, time period and context of your question. But I'm like 98% sure it's existentialism.
In 1845, during the heated debate about the annexation of the Republic of Texas to the U.S. and the imminent war against Mexico, newspaper writer coined the phrase "Manifest Destiny" in order to imply that the U.S. was entitled by God to expand and spread the blessings of U.S. democracy and principles of freedom.