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A period of rebellion at the start of the 19th century led to the rise of the progressive Sultan Mahmud II and eventually to the " Tanzimat " period , which produced political reforms and allowed new technology to be introduced to the city .
 Mahmud II, Tanzimat
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Mahmud II, Tanzimat