Marklin is the worlds oldest manufacturer of commercial market electric toy trains, but even they have had their own share of problems in the poor economic times of the past decade. They do seem to be recovering quite nicely now, though. Marklin also owns LGB (Large Scale), as well as several other formerly independent makers.
Model railroading is a very popular hobby in Great Britain and throughout much of Europe. There are a good number of toy and model train manufacturers in that part of the world, with the primary emphasis being on products in HO/OO, N, and #1 gauge (pretty much in that order, I imagine). There is also an O gauge/scale market, but I'm not sure how big a slice of the pie it has.
Some European production is also being done in Asia, but they also are pretty good about keeping production in the Euro market wherever possible. My most recent LGB items were made in Europe, as were the most recent Z scale (Marklin) trains I purchased.
Based on previous personal experience, and given a choice, I always prefer products made in Europe or England. Doesn't mean they're prefect in all cases, but they sure come pretty darn close.