Which of these countries has the largest population?

India, also known as the Republic of India, is a country in South Asia. India is a secular, federal republic, governed in a democratic parliamentary system, and administered in 29 states and seven union territories. A pluralistic, multilingual and multi-ethnic society, India is home to 1.3 billion people.

The United States of America (USA), commonly known as the United States (U.S. or US) or America, is a country comprising 50 states, a federal district, five major self-governing territories, and various possessions. With a population of over 327 million people, the U.S. is the third most populous country

Russia is by a considerable margin the largest country in the world by area, covering more than one-eighth of the Earth's inhabited land area, and the ninth most populous, with about 146.80 million people as of 2019.

The 2016 Canadian Census enumerated a total population of 35.15 million people.