The Capital of Magadh empire was situates at Rajgriha or Girivraja. The city was almost impregnable as it was surrounded by five hills, the openings in which were closed by stone walls on all sides.
Heliodorus was the Greek ambassador of Indo-Greek king Antialcidas Nikephoros of Taxila in the court of Sunga King Bhagbhadra. He erected famous votive Heliodorus pillar around 110 BC near Vidisha, Madhya Pradesh.
The Ikshavakus arose on the ruins of Satavahana power in eastern part of the peninsula in India. The Ikshavakus left behind many monuments at Nagarjunkonda and Dharanikota. They were a local tribe.