Greeks, Kushanas & Shakas had entered India through the North West side. Accepting the local religion would provide them the easiest way to achieve legitimacy of their rule. Since Buddhism was prevalent in the area at that time and it was provided easiest entry (Hinduism had st5rict caste based structure) so, they embraces Buddhism.
The Gandhara School of art was developed in first century AD along with Mathura School during reign of Kushana emperor Kanishka. Both Shakas and Kushanas were patrons of Gandhara School, which is known for the first sculptural representations of the Buddha in human form.
Though the Satavahanas made liberal sacrificial fees to the Brahmanas, they also promoted Buddhism. Some of the important Buddhist sites under the Satavahanas were Nagarjunakonda and Amravati in Andhra Pradesh and Nashik and Junar areas of Maharashtra.
In the post-Mauryan period, the techniques of cloth-making, silk- weaving, and the manufacture of luxury articles developed. Mathura was a great center for the manufacture of a special type of cloth which was called shataka.