The Zimmerman Telegram was a message from Germany to Mexico where Germany tried to make an alliance with Mexico in case the U.S joined the war. Germany said that they would let Mexico have their old territory back, which included Texas.
It means exploiting the resources of the conquered country for the benefit of the conqueror. Imperialism means creating an empire, expanding into the neighbouring regions and expanding its dominance far. Colonialism is termed as building and maintaining colonies in one territory by people from another territory.
I know that it was cheap land so it would be A or D to my best judgement. Are you good at math?
<span>by promoting: openness, encouraging independence, and supporting freedom!
Hope This Helps!</span>