Complex sentence: In 1876 the Indian Act was passed, and in the Joint Indian Reserve Commission, plots of land or Indian reserves were cordoned designating the native population to specific areas, managed and controlled by Indian agents from the Department of Northern and Indian Affairs.
Split into simpler sentences: In 1876 the Indian Act was passed and the Joint Indian Reserve Commission, cordoned off plots of land or Indian reserves, designating the native population to specific areas. These reserves were managed and controlled by Indian agents from the Department of Northern and Indian Affairs.