<prompt> Translate the following text to EnglishMabadiliko katika miaka ya 1930 yaliyosababishwa na mvurugo wa baada ya vita ya Ulaya yalikuwa tu kichocheo cha kuongeza juhudi kwa kugawanya viwanda vikali katika sekta za utengenezaji wa mashine, chuma, na kemikali.  <response>: Setbacks in the 1930s caused by the European postwar slump were only a spur to redouble efforts by diversifying heavy industry into the machine-making, metallurgical, and chemical sectors. 