Tonga, officially the Kingdom of Tonga, is a Polynesian sovereign state and archipelago comprising 176 islands with a surface area of about 750 square kilometres scattered over 700,000 square kilometres of the southern Pacific Ocean, of which 52 are inhabited by its 103,000 people. Wikipedia

North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It can also be considered a northern subcontinent of the Americas. Wikipedia