How did Manitoba’s borders expand after 1870?

When Manitoba was first admitted to the Canadian Confederation in 1870, it was a small, "postage stamp-sized" province. Following its creation, the province underwent several territorial expansions, primarily at the expense of the Northwest Territories.12

Manitoba’s borders were adjusted in the following stages:

• 1881: The provincial boundaries were expanded to the west.2
• 1884: The boundaries were expanded to the east.2
• 1912: The province saw a significant northward expansion.2

These changes transformed the province from its original, limited size into its present-day geographic form.12