I want to test the ability of students to read a passage and answer questions about it. Could you please come up with a good question for the passage "Around the 14th century, there was little difference between knights and the szlachta in Poland. Members of the szlachta had the personal obligation to defend the country (pospolite ruszenie), thereby becoming the kingdom's most privileged social class. Inclusion in the class was almost exclusively based on inheritance."? 

Poland's government was a?