Afro-Eurasia

Afro-Eurasia is the largest sub-planet of Earth, comprising the continents of Europe, Asia, and Africa. Afro-Eurasia is  the oldest sub-planet of Earth. Also known as the Old World, Afro-Eurasia is known for its ancient landmarks and has the oldest countries on Earth.

Europe
Europe is the most developed continent in Afro-Eurasia. Europe generally has high standards of living. Europe has some of the most ancient countries, cultures, and languages. Europe's most famous landmarks are the Eiffel Tower and the Leaning Tower of Pisa, among others. Europe is also the smallest continent in Afro-Eurasia.

Asia
Asia is the largest continent in Afro-Eurasia by both area and population. Asia is a mix of developed and developing countries. It is known for many famous landmarks such as the Great Wall of China. Asia is one of the continents with the most robust economies, but there are also some very poor countries. Asia has 2 subcontinents which are India and Arabia. Asia also has many ancient countries, cultures, and languages.

Africa
Africa is the least developed continent in Afro-Eurasia. It is also the second-largest continent in Afro-Eurasia. Africa is mostly undeveloped, but countries such as South Africa and Egypt are somewhat developed and have a large economy. Countries such as Mali, the Democratic Republic of Congo, and Zimbabwe are very poor. Africa is home to ancient civilizations such as ancient Egypt.