Complex sentence: Although a casino was incorporated from the inception of the Kurhaus, it only began to achieve international fame in the mid- 1830s, when gambling was forbidden in France, which encouraged gamblers to cross the border to try their luck at Baden-Baden's gaming tables.
Split into simpler sentences: Although a casino was incorporated from the inception of the Kurhaus, it only began to achieve international fame in the mid- 1830s, when gambling was forbidden in France. This legal barrier encouraged gamblers to cross the border where they could try their luck at Baden-Baden's gaming tables.