This german-coined term refers to workers who work in a foreign country, as long as there's work available, but who would eventually return to their respective homelands.

a. resident alien
b. temporary worker
c. immigrant
d. guest worker

When geographers describe how two places are related to each other spatially, they are describing a. where the places are located in relation to one another b. what kinds of natural environments are around each place c. how each place is changing over time d. what kinds of cultures are in each place