Frequently the issue is the width of the door jamb. Modern homes -- by which I mean those build from the late 1960s to the present -- tend to have door jambs with fairly common exterior widths. They'll usually be 4 9/16 inches or 6 9/16 inches.
Germany did not just get a new government. The Allies made sure that Germany got a different kind of government. Before1914, the government of Germany was almost a military autocracy; after 1919, it was a parliamentary democracy.
The list below gives the Chancellors of West Germany; the government of East Germany was headed by the Chairman of the Council of Ministers. In 1990, East Germany was dissolved (see German reunification) and merged with West Germany, which retained the name of the Federal Republic of Germany.