Question: what is canada's biggest source of income?
Answer: 1﻿ There are about 38 million people living in Canada, and with a gross domestic product (GDP) of over $1.73 trillion, it's the tenth largest economy in the world. 2﻿ 3﻿ Four industries that bring in a good portion of the revenue for Canada are 1) oil and gas, 2) energy, 3) manufacturing, and 4) tourism.