He appointed all the wrong people for his cabinet was a major reason, he was also rather clumsy people made fun of him because of it.
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Shah Jahan left behind a grand legacy of structures constructed during his reign. He was one of the greatest patrons of Mughal architecture. His most famous building was the Taj Mahal, which he built out of love for his wife, the empress Mumtaz Mahal.
Answer:
the harvesting of the crops