Yes the gearbox is German made. (at least designed, and MOST of them made there. i cannot promise every one is made in Germany.)
The basic design has been used by Ford for awhile. It is a good gearbox.
You have a so-called MTX-75 transaxle. It is mfr'd by Getrag-Ford, I think in Cologne (sp?), Germany.
The 75 refers to the input to output shaft spacing (of 75mm) or just below 3".
It is a medium duty strength of transaxle, that has had a very successful product run, first (I believe) in the Mondeo / Contour / Mystique. It may have seen service before hand, in the UK / Europe, in an Escort variant...?
The free-spinning gears run on caged needle bearings, which adds to the longevity.
It has become more refined as production has continued, and now is considered to be a pretty smooth 'box. Almost rivalling BMW or Honda.
Treat it with respect, and it will last a long time.
First one or two shifts (from first to second) from bone cold -- do it at just above walking speed -- and pull smoothly and slowly... and you will preserve the second gear synchro.
Also, do not downshift from high speeds, into lower gears.
Gentle gear-lever pressure; it'll "tell you" when it wants to go into gear...
Typically do not shift back into first, upon stopping, 'till its at walking speed.
Finally, make all of your shifts smoothly, fairly slowly, and pause a moment at neutral.
Do all of this, and it'll last a 'real long time.