Croatia
A 2011 survey revealed that 78% of Croatians claim knowledge of at least one foreign language. According to a survey ordered by the European Commission in 2005, 49% of Croatians speak English as the second language, 34% speak German, 14% speak Italian, and 10% speak French. Russian is spoken by 4% each, and 2% of Croatians speak Spanish. However, there are large municipalities that have minority languages that include substantial populations that speak these languages. An odd-majority of Slovenes (59%) have a certain level of knowledge of Croatian. The country is a part of various language-based international associations most notably the European Union Language Association.
Bartol Kašić
In almost 200 pages and two parts ("books"), he provided the basic information on the Croatian language and explained the Croatian morphology in great detail. The language is basically Shtokavian with many Chakavian elements, mixing older and newer forms. For unknown reasons, the grammar was not accompanied by a dictionary, as was the practice with Jesuit dictionaries and grammars of Croatian.