Original sentence: German, Slovene, Croatian.In March 1938, Austria was incorporated into the German Third Reich, a development commonly known as the "Anschluss" (annexation).Only two numerically significant minority groups exist -- 30,000 Slovenes in Austrian Carinthia (south central Austria) and about 60,000 Croats in Burgenland (on the Hungarian border)
Edited sentence: In March 1938, Austria was incorporated into the German Reich, a development commonly known as the "Anschluss" (annexation).Only two numerically significant minority groups exist--30,000 Slovenes in Carinthia (south central Austria) and about 60,000 Croats in Burgenland (on the Hungarian border)