I'd drop the quite unimportant Marshall Plan from the list and add the InterWar years efforts of left German and French foreign politicians at cooperation instead. They were the prototypes for Adenauer's integration policy.


The Montanunion (the coal and heavy industries treaty) was rather a weighted shackle that inhibited the French and German heavy industries in their development. It was more meant as a check against Germany (a price Germany paid for more useful forms of cooperation) than as a mutually beneficial cooperation.


Much of the current crisis and the German reactions to it has to be seen in the context of the German reunificaiton. The reunification process was a prototype for the economic and monetary union on European scale.
The feature of the reunification that we did not want to duplicate at all were the transfers from West to East.
Some Europeans want such transfers (often hidden through Eurobonds, asymmetric financing of public budgets by money printing and so on). That makes no sense for us. Such transfers would suck so much wealth out of our country that we'd be better off working much less and earn much less.