Final answer:
In the late 1800s, Clifford Sifton was the Minister of the Interior for Canada, promoting immigration to the western prairies and supporting the CPR for national unity and economic growth.
Step-by-step explanation:
Clifford Sifton's position in the late 1800s was Minister of the Interior for Canada. He is well-known for his aggressive promotion of immigration to populate the western prairies and for supporting the construction of the Canadian Pacific Railway to foster national unity and economic growth. As Minister of the Interior, Sifton was instrumental in the settlement and development of the Canadian West, which emerged as a crucial aspect of Canada's growth and prosperity during his tenure.Sifton played a major role in promoting and implementing immigration policies that encouraged settlement and development in the western provinces of Canada.