The rapidly growing population of Poland within its new boundaries was ¾ agricultural and ¼ urban; Polish was the primary language of only ⅔ of the inhabitants of the new country. The minorities had very little voice in the government. The permanent March Constitution of Poland was adopted in March 1921. At the insistence of the National Democrats, who were concerned about how aggressively Józef Piłsudski might exercise presidential powers if he were elected to office, the constitution mandated limited prerogatives for the presidency.