Why did many U.S. companies establish branch plants in Ontario?

Many U.S. companies established branch plants in Ontario primarily as a strategic response to Canadian protectionist policies, most notably the National Policy of 1879. This policy imposed high tariffs on imported consumer goods, which effectively prevented U.S. products from crossing the border while still allowing U.S. firms to bypass these trade barriers by setting up local manufacturing operations.12

By establishing these branch plants, U.S. companies could supply the Canadian market directly from within the country, avoiding the high costs associated with importing their goods. Ontario, in particular, was an attractive location for these investments due to its:12

• Strategic Location: Proximity to major U.S. markets and manufacturing belts.13
• Resource Access: Abundant natural resources and access to essential supplies like coal.3
• Infrastructure: A well-developed transportation system and access to cheap power.3
• Labor Force: A large and skilled labour force.3

These factors, combined with the protective tariff environment, made Ontario the leading manufacturing province in Canada.43