The first ruler of Magadha from the Haryanka dynasty was _______.

Bimbisara

The correct answer is Option 3- Bimbisara

The first ruler of Magadha from the Haryanka dynasty was Bimbisara.

Bimbisara ruled Magadha from 543 to 492 BCE. He was a contemporary of the Buddha and Mahavira. Bimbisara was a skilled administrator and diplomat, and he expanded the Magadhan empire significantly. He also reformed the government and bureaucracy, and he introduced new laws and regulations.

Bimbisara was a patron of Buddhism and Jainism. He is said to have built many Buddhist monasteries and temples. He also converted to Buddhism himself.

Bimbisara was succeeded by his son, Ajatshatru. Ajatshatru continued his father's expansionist policies, and he conquered the kingdom of Vaishali. He is also said to have killed his father in order to ascend to the throne.