It broadens its view to consider the service people around the world.
students'
This is because in, "We were impressed by several students' drawings," many students are owning many drawings.
student's will not work because this sentence does not say that only one student owns this one drawing.
students will not work because this is not possessive.
*town’s, is the only correction i see that needs to be made
These are mine, the others are yours
