National Policy
The National Policy was a Canadian economic program introduced by John A. Macdonald's Conservative Party in 1876 and put into action in 1879. It called for high tariffs on imported manufactured items to protect the manufacturing industry. Macdonald campaigned on the policy in the 1878 election, and defeated the Liberal Party, which supported free trade.
Usage
The term National Policy originally referred to a proposed raise in tariffs by the Macdonald-led Conservatives ("Tories") during the 1878 election campaign. Over time the term became associated with the entire Tory platform for developing the economy, especially increased immigration to Western Canada, and the development of the Canadian Pacific Railway's transcontinental line.
Manufacturers
Macdonald hoped that by creating a strong manufacturing base in Canada, the nation would become more secure and less reliant on the United States. He was also closely linked to the Montreal and Toronto business interests that would benefit from such a policy, and they played an important role in keeping the Tories in office until 1896