Which historical event resulted from the 1948 Soviet blockade of the French, U. S., and U. K. sectors of Berlin?

Why did the dakota sioux start an uprising in 1862? a.the government had not followed through with promises of . b.the government had given to an enemy american indian group. c.the sioux were not allowed to sell hunted animals to the us government. d.the sioux had made an agreement with neighboring tribes to attack.