Explanation:

The founder of the Satavahana dynasty was Simuka. He and his successors established their authority from the mouth of the Krishna to the entire Deccan plateau. According to the Puranas, the Satavahana king killed the last Kanva ruler of Magadha and presumably took possession of his kingdom. The Gupta Empire, which ruled the Indian subcontinent from 320 to 550 AD, ushered in a golden age of Indian civilization. It will forever be remembered as the period during which literature, science, and the arts flourished in India as never before.

The Shunga dynasty was a Brahmin dynasty, established in 185 BCE, about 50 years after Ashoka's death, when the emperor Brihadratha Maurya, the last ruler of the Maurya Empire, was assassinated by his Senani or commander-in-chief, Pushyamitra Shunga, while he was reviewing the Guard of Honour of his forces.