Anatolia is a geographic and historical term denoting the westernmost protrusion of Asia, comprising about two-thirds of the modern Republic of Turkey. The region is bounded by the Black Sea to the north, Georgia to the northeast, Armenia and the Euphrates river to the east, the Mesopotamian plain and Orontes river to the southeast, the Mediterranean Sea to the south, and the Aegean Sea to the west.
The Balkans (often referred to as the Balkan Peninsula, although the two are not coterminous) is a geopolitical and cultural region of southeastern Europe. The region takes its name from the Balkan Mountains, which run through the centre of Bulgaria into eastern Serbia. The region has a combined area of 550,000 km (212,000 sq mi) and a population of about 55 million people. "Balkan" comes from a Turkish word meaning "a chain of wooded mountains".
Central Europe is the [[place lying between the variously defined areas of Eastern and Western Europe. The term and widespread interest in the region itself came back into fashion after the end of the Cold War, which, along with the Iron Curtain, had divided Europe politically into East and West, splitting Central Europe in half. The concept of Central Europe, and that of a common identity, is somewhat elusive.
Central America Central America is the central geographic region of the Americas. It is the southernmost, isthmian portion of the North American continent, which connects with South America on the southeast. Most of Central America is considered to be part of the Mesoamerican biodiversity hotspot.
Central Asia Central Asia is a region of Asia from the Caspian Sea in the west to central China in the east, and from southern Russia in the north to Afghanistan in the south. It is also sometimes known as Middle Asia or Inner Asia, and is within the scope of the wider Eurasian continent. Various definitions of its exact composition exist and no one definition is universally accepted. Despite this uncertainty in defining borders, it does have some important overall characteristics.