One major difference between the occupations of Alcatraz in 1969 and Wounded Knee in 1973 was that

The occupation of Alcatraz in 1969 was a largely peaceful protest, while the 1973 occupation of Wounded Knee involved an armed standoff and resulted in deaths. Therefore, the key difference is that Wounded Knee resulted in the deaths of several people. Alcatraz was also a protest against broken treaties, so choice A does not distinguish the two occupations.

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