Complex sentence: Nonetheless, industry, which had shaped and sustained Florence since the Middle Ages, began to decline throughout the 17th centupensent in business became less lucrative and there was some "re-feudalization" of the Tuscan state with many patricians investing in land instead of industry.
Split into simpler sentences: Nonetheless, industry, which had shaped and sustained Florence since the Middle Ages, began to decline throughout the 17th century. Investment in business became less lucrative and there was some "re-feudalization" of the Tuscan state with many patricians investing in land instead of industry.