. "Kushan Republic (Yarmuk)"@en . . "The Kushan Republic was a short lived organisation set up by the native Kushans after the collapse of the Persian Empire, when the Rashidun Caliphate occupied Afghanistan. The first incursions of the Kushans were only minor and were easily put down. The Rashidun were sure they had won."@en . "The Kushan Republic was a short lived organisation set up by the native Kushans after the collapse of the Persian Empire, when the Rashidun Caliphate occupied Afghanistan. The first incursions of the Kushans were only minor and were easily put down. The Rashidun were sure they had won."@en .