Central and Eastern Europe experienced ethnic tensions in the early 1900s primarily because A) similarity in cultures and traditions caused problems between ethnic groups.
B) military powers were unable to stop the conflicts between ethnic groups.
C) many ethnic groups shared unlimited amounts of territory.
D) many ethnic groups wanted their own nation-states.

Which points did chief justice roger b. taney use to justify the supreme court’s ruling in the dred scott case? the property clause of the constitution, the due process clause of the fifth amendment, and the fact that african americans were not citizens. the practice of judicial review established in marbury v. madison, the property clause of the constitution, and the due process clause of the fifth amendment. the necessary and proper clause of the constitution, the due process clause of the fifth amendment, and the fact that african americans were not citizens. the commerce clause of the constitution, the elastic clause of the sixth amendment, and the practice of judicial review established in gibbons v. ogden.