Complex sentence: After 1840, when Bashir was sent into exile the palace was used by the Ottomans as a government building, during the French Mandate its role was preserved and it served as a local administrative office.
Split into simpler sentences: After 1840, when Bashir was sent into exile the palace was used by the Ottomans as a government building. During the French Mandate its role was preserved and it served as a local administrative office.