Answer:
Trade brought wealth to a culture in ancient Egypt.
Explanation:
Without the canals and rivers, there would not be any route to trade and water to grow crops for food.
The correct answer in this case would be militarism (b). The reason why this is the correct answer because a nation's tendency to expand its armed forces and acquire new and better weapons is also exactly that - militarism.
Other answers here wouldn't be correct because they have different meanings. The only thing that would come close is imperialism which has some similarities but is used in different contexts.
Individuals can find people of need and work towards providing services to them; inviting others to work with them and inspiring them to likewise work for the improvement of social conditions.
Ps. please note that Mother Theresa was actually a controversial figure and many claim that she did not help the way she claimed to.
