South Carolina issued a document similar to the Declaration of Independence. The document created by South Carolina was called the "Declaration of the Immediate Causes Which Induce and Justify the Secession of South Carolina from the Federal Union."
In this document, the South Carolina goes over their feelings on how the federal government was mistreating the state and failing to enforce the Fugitive Slave Act enacted during the Compromise of 1850. This list of complaints/reasons for the secession was structured very similarly to the Declaration of Independence, in which the American colonists generated a list of reasons why they were breaking away from the British.
West Berlin was an island of the West, or the Western Curture, or Western sphrere of influence, surrounded by the Eastern Bloc/Western sphere of influence on all sides. It lied in the middle of East Germany, a socialist country, and did not have any direct land connection to other capitalist countries.
If you're talking about the government structure then it's a democracy.
If not then maybe you should try clearing up any misinterpretations or misunderstandings in the question.
Both the House and the Senate are made up out of the members from both the Democratic and the Republican Party. According to these statistics we can see that the minority in the House and the majority in the Senate are from the same political party as the President.