Task: Text Categorization
Input (English): In his second term in this politicians highest office, he proposed a transcontinental railroad, which his opponents considered unrealistic and which later became the CP Railway. In addition to squashing a Northwestern rebellion, he bought Ruperts Land from the Hudsons Bay Company. This man formed a group specifically to prevent another Riel rebellion, which later became the Royal Canadian Mounted Police. The Pacific Scandal of 1873 regarding the Canadian Pacific Railway led to the resignation of this politician. For ten points, name this Prime Minister who also added British Columbia, PEI, Manitoba, and the Northwest Territories under his tenure as the first Prime Minister of Canada.
Output (English): History