Will I make it with a 1 hour 15 minutes connection in FRA on a LH inter-european flight?
The Germans are pretty darn efficient...do you mean 'intra' European? As in, flying from one European (EU) country to another? If arriving from the US to FRA, and connecting to a Europe flight, it may be tight. Intra-Europe (AMS to FRA, connecting to LHR) I wouldn't worry....also, if you're on Lufthansa, there are lots of flights if you miss the first one.