Countries (varies by region)

"Countries (varies by region)" refers to the different nations grouped within specific geographic areas, such as continents or regions, which share cultural, historical, or economic characteristics. The classification helps organize and understand the diversity of governments, languages, and customs across the world. Some regions may have more countries than others, and the classification can influence policies, trade, and regional cooperation. It acknowledges that the number and type of countries differ depending on the area, allowing for regional analysis and targeted approaches in international affairs.