India is land famous for its knowledge , riches , spices and clothes , Some areas of india also connected to the parts of famous silk route from china to Italy .Ancient Indian border touches to the Persia in Central Asia , therefore conflicts between Persian empire and india was not unusual . In the 600 BC onwards Achaemenid empire began their invasions on their east and west borders i.e towards India and Greece .The North western part of india which was wealthy part did not have any powerful kingdom like Magadh to bring the entire region under one organised kingdom. There were many small kingdoms who were fighting with each other .The Persian rulers took advantage of political instability in this region and begin their attacks on north west part of India. Cyrus what is the founder of Achaemenid empire in Iran he was the first ruler to attack on Indian border land and captured Gandara region( modern Afghanistan). Many Indian tribes living in the west part of the Indus river submitted