Explanation:

Maski Inscription: Maski is a village and an archaeological site in Raichur district of Karnataka. It lies on the bank of the Maski river which is a tributary of the Tungabhadra. The site has a minor rock edict of Emperor Ashoka. It was the first edict of Emperor Ashoka that contained the name Ashoka in it instead of ‘Devanampriya’ or ‘Piyadassi’.
Kalsi Inscription: Kalsi town is known for its heritage importance. It is a small town located in between Chakrata and Dehradun on the banks of Yamuna river. The site of Ashoka’s inscriptions at Kalsi is singularly unique as it is the only place in North India where the great Mauryan emperor has inscribed the set of the fourteen rock edicts. The language of these edicts is Prakrit and the script is Brahmi. The Rock edict was written around 450 B.C and is made of quartz which is 8 feet broad and 10 feet long. These rock edicts reflect Asoka’s human approach in his internal administration when he converted himself to Buddhism.
Mehrauli Inscription: The Mehrauli Iron Pillar is located in Delhi in the Qutub Minar complex. It is notable for the rustresistant composition of the metals used in its construction. This pillar was established by Chandragupta-II of Gupta dynasty as Vishnupada in the honor of Lord Vishnu. This pillar credits Chandragupta with conquest of the Vanga Countries by his battling alone against the confederacy of the enemies united against him. It also credits him for conquest of Vakatakas in a fight that ran across seven mouths of Indus River.
Aihole Inscription: Aihole in Karnataka was the first capital of Chalukyas. Many inscriptions were found at Aihole, but the inscription found at Meguti Temple popularly known as Aihole inscription witnessed many historical events of Chalukyas. The inscription is written in Sanskrit and it is in Kannada script.