Siberia is an extensive geographical region spanning much of Eurasia and Northern Asia. Siberia stretches southwards from the Arctic Ocean to the hills of north-central Kazakhstan and to the national borders of Mongolia and China. With an area of 13.1 million square kilometres (5,100,000 sq mi), Siberia accounts for 77% of Russia's land area, but it is home to only 23% of the country's population (approximately 33 million people). If it were a country by itself, it would still be the largest country by area, but in population it would be the world's 35th-largest and Asia's 14th-largest.

The United States of America (USA), commonly known as the United States (U.S. or US) or America, is a country located primarily in North America, consisting of 50 states, a federal district, five major self-governing territories, and various possessions. At 3.8 million square miles (9.8 million square kilometers), it is the world's third- or fourth-largest country by total area.