In 2007, Canada accepted more than 250,000 immigrants - one of the highest numbers in the last 50 years. What might be the reason for this policy?

Labor shortages

Explanation:

There was too much demand and too little supply. The workforce was suffering greatly due to the lack of workers working for little pay. To ensure that Canadian markets and businesses would be competitive in the global economy, the Canadian government issues more than 251000 permanent visas.