What is "greco-buddhism"

Greco-Buddhism, sometimes spelled Graeco-Buddhism, refers to the cultural syncretism between Hellenistic culture and Buddhism, which developed between the 4th century BC and the 5th century AD in Bactria and the Indian subcontinent, corresponding to the territories of modern-day Afghanistan, India, and Pakistan. It was a cultural consequence of a long chain of interactions begun by Greek forays into India from the time of Alexander the Great, carried further by the establishment of the Indo-Greek Kingdom and extended during the flourishing of the Kushan Empire. Buddhism was then adopted in Central and Northeastern Asia from the 1st century AD, ultimately spreading to China, Korea, Japan, Philippines, Siberia, and Vietnam.