Sovereign is a powerful leader or authority that sets up courts.
the answer is C
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Here are the matches:
<span>1- The Soviet Union invaded Czechoslovakia and reversed its economic reforms, D.1968
</span><span>2-Workers in Poland won higher wages after an uprising. B. 1956
</span><span>3-Yugoslavia parted ways with the Soviet Union because of political differences. A. 1948
</span><span>4-Military forces began constructing the Berlin Wall. C.1961
</span>
All of these events keep strengthening the west's relation with these countries and weakened Soviet Union's position even among its neighboring countries.
<span>D) federal safeguards were established to avoid future depressions </span>
