What significant link was formed by the completion of the railway system in Canada in 1885?

The completion of the railway system in Canada in 1885 established a significant link between Eastern and Western Canada. This development was crucial because it facilitated not only transportation and trade across the vast distances of the country but also encouraged the movement of people, goods, and resources. The railway connected cities and regions that were previously isolated from one another, fostering national unity and economic growth. It allowed for the easier export of Western agricultural products to Eastern markets, which helped establish Canada's economy as a whole.

This transformation through the railway system also played a vital role in the expansion of settlements and the overall development of the Canadian west, making it integral to the nation's history and identity. In contrast, the other options focus on specific regions or connections that were not as broadly impactful as the national link formed by connecting the East and West.