Question

why did canada want to increase its population during the mid to late 1900s?
canada needed more workers to populate the territories.
canada needed people with new ideas.
canada needed a more diverse population.
canada needed more workers to increase industry.

Explanation:

In the mid to late 1900s, Canada's westward expansion and economic growth relied heavily on populating its vast, underdeveloped territories. While industrial growth was a factor, the primary, overarching goal tied to population increase was filling and developing its large, sparsely populated regions, which required more workers to settle and build these areas. The other options are secondary or less central to the core national priority of territorial settlement in this era.

Answer:

Canada needed more workers to populate the territories.