The correct answer is Mexico, Canada, and Greenland.
This is the only correct answer for the following reasons:
1) Russia and Spain are in the Eastern hemisphere.
2) Argentina and Brazil are in the Southern hemisphere.
If you look at a map, you can see that Mexico, Canada, and Greenland are all in the Western Hemisphere and all three of the countries are north of the equator.
C) be willing to express allegiance to America.
The correct answer is - 2.) Communist governments under Soviet control.
The Soviet Union, just like the United States, during the Cold War period tried to have as many allies as possible in order to have stronger support and protect its interests. Eastern Europe was a region that was almost totally under the control of the Soviets, apart from Yugoslavia which was strong on its own and didn't wanted to be submissive to other country.
The Soviets sponsored Communist governments and gave them a lot of support, be it financial, propaganda, or even military one if there were problems in the country. That led to almost all of the Eastern European nations having governments that were under the influence and control of the Soviets, making them a satellite countries to the Soviet Union.
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