Because
The government viewed Cuba as a nation in need of independence. Granted, the U.S. wanted Cuba independence from Spain so that the U.S. could exert indirect political and economic control over the nation, its peoples, and its resources.
I would say A primary source...
It’s B
The Berlin Wall was built by the German Democratic Republic during the Cold War to prevent its population from escaping Soviet-controlled East Berlin to West Berlin, which was controlled by the major Western Allies.
In the dictionary it saids "an attempt to achieve a vision of a future guardian spirit, traditionally undertaken at puberty by boys of the Plains Indian peoples, typically through fasting or self-torture."