Complex sentence: After the elder La Verendrye's death the new governor Jonquière forced his sons out of their father's patrimony and control of the west was given to Jacques Legardeur de Saint-Pierre (1750--53).
Split into simpler sentences: After the elder La Verendrye's death, the new governor Jonquière forced his sons out of their father's patrimony. Control of the west was given to Jacques Legardeur de Saint-Pierre (1750--53).