Why were so many distinctive cultures able to develop over time in asia?

the culture of asia encompasses the collective and diverse customs and traditions of art, architecture, music, literature, lifestyle, philosophy, politics and religion that have been practiced and maintained by the numerous ethnic groups of the continent of asia since prehistory. identification of a specific culture of asia or universal elements among the colossal diversity that has emanated from multiple cultural spheres and three of the four ancient river valley civilizations is complicated. however, the continent is commonly divided into six geographic sub-regions, that are characterized by perceivable commonalities, like religion, language and relative ethnic homogeneity. these regions are central asia, east asia, north asia, south asia, southeast asia and west asia

Asia is the biggest of the world's landmasses, covering roughly 30 percent of the Earth's land. It is additionally the world's most crowded continent, with about 60 percent of the complete populace.

The geographic term "Asia" was initially utilized by old Greeks to depict the developments east of their empire. Antiquated Asian people groups, considered themselves to be a differed and various blend of societies—not a collective gathering.

Today, the expression "Asia" is utilized as a social idea, while subregion groupings depict the particular geopolitical personalities of the landmass. These characterizations are Western Asia, Central Asia, Southern Asia, Eastern Asia, Southeastern Asia, and Northern Asia.