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.
At the end of the First World War, the Kaiser was kicked out of Germany, and in 1919 the Weimar Republic was set up. Before 1914, the government of Germany had been a military autocracy; after 1919, it was a parliamentary democracy.