The two leaders ultimately reached an agreement, and through a treaty sealed in 305 BC, Seleucus ceded a considerable amount of territory to Chandragupta in exchange for 500 war elephants, which were to play a key role in the forthcoming battles, particularly at Ipsus.

Regardless, Seleucus and Chandragupta ultimately reached a settlement and through a treaty sealed in 305 BCE, Seleucus, according to Strabo, ceded a number of territories to Chandragupta, including southern Afghanistan and parts of Persia.

In the year 305 BC, Seleucus I Nicator went to India and apparently occupied territory as far as the Indus, and eventually waged war with the Maurya Emperor Chandragupta Maurya:

After Alexander's death in 323 BCE, Chandragupta, turned his attention to Northwestern India ( modern Pakistan ), where he defeated the satrapies ( described as " prefects " in classical Western sources ) left in place by Alexander ( according to Justin ), and may have assassinated two of his governors, Nicanor and Philip.

Coin of Chandragupta II or Vikramaditya, one of the most powerful emperors of the Gupta empire during times referred to as the Golden Age of India

These hordes had helped Chandragupta Maurya defeat the ruler of Magadha and placed Vhandragupta on the throne, thus laying the foundations of Mauryan Dynasty in Northern India.

The oldest recorded census in India is thought to have occurred around 300 BCE during the reign of the Emperor Chandragupta Maurya under the leadership of Kautilya or Chanakya.

Chanakya's student Chandragupta Maurya, founder of the Maurya Empire in India, made use of assassinations, spies and secret agents, which are described in Chanakya's Arthasastra.

Modern day Afghanistan was conquered by the Maurya Empire, which was led by Chandragupta Maurya from Magadha ( modern day Bihar in India ).

The military exploits of the first three rulers — Chandragupta I ( c. 319 – 335 ), Samudragupta ( c. 335 – 376 ), and Chandragupta II ( c. 376 – 415 ) — brought much of India under their leadership.

Chandragupta & Samprati are credited for the spread of Jainism in Southern India.

Under Chandragupta and his successors, internal and external trade, agriculture and economic activities, all thrived and expanded across India thanks to the creation of a single and efficient system of finance, administration, and security.

Seleucus went as far as India, where after two years of war he reached an agreement with Chandragupta Maurya, in which he exchanged his eastern territories for a considerable force of 500 war elephants, which would play a decisive role at Ipsus ( 301 BC ).

Seleucus invaded India ( modern Punjab Pakistan ) in 305 BC, confronting Chandragupta Maurya ( Sandrokottos ), founder of the Maurya empire.

* Chandragupta II, emperor of the Gupta Empire ( India )

* Kumaragupta I succeeds his father Chandragupta II as emperor of the Gupta Empire ( India ).

* Emperor Chandragupta II, ruler of the Gupta Empire, begins a war against the Shaka Dynasty in West India.

* Emperor Chandragupta II becomes ruler of the Gupta Empire ( India ).

Chandragupta Maurya united northern India around 320 BCE, establishing the Maurya empire, which included all of modern-day Madhya Pradesh.

* King Chandragupta I founds the Gupta dynasty in northern India.

* Chandragupta Maurya, Mauryan dynasty Emperor of India, r. 322 – 298 BC

** Chandragupta Maurya, Emperor of the Maurya Empire in India, r. 322 – 298 BC ( approximate date )

* Seleucus I Nicator expands his kingdom throughout Persia as far east as India, but his advance is eventually halted by Chandragupta Maurya, the founder of the Maurya dynasty of India.

* The Mauryan emperor Chandragupta defeats Seleucos I as he tries to invade India.

He was defeated by the emperor of India, Chandragupta Maurya and accepted a matrimony alliance for 500 elephants after ceding the territories considered as part of India.

After this incident, Chanakya began to persuade his disciple Chandragupta of the need to build an empire that could protect Indian territories from foreign invasion.

Seleucus I Nicator, a Macedonian satrap of Alexander, reconquered most of Alexander's former empire and put under his own authority the eastern territories as far as Bactria and the Indus ( Appian, History of Rome, The Syrian Wars 55 ), until in 305 BCE he entered into conflict with Chandragupta:

As noted by scholars such as R. C. Majumdar and D. D. Kosambi, Seleucus appears to have fared poorly, having ceded large territories west of the Indus to Chandragupta.

Silver coin of Chandragupta II, minted in his Western territories, in the style of the Western Satraps. Obv: Bust of king, with corrupted Greek legend " OOIHU ". Rev: Legend in Brahmi, " Chandragupta Vikramaditya, King of Kings, and a devotee of Vishnu ", around a peacock.

Silver coin of Chandragupta II the Great, minted in his Western territories, in the style of the Western Satraps. Obv: Bust of king, with corrupted Greek legend " OOIHU ".< ref >" Evidence of the conquest of Saurashtra ( region ) | Saurastra during the reign of Chandragupta II is to be seen in his rare silver coins which are more directly imitated from those of the Western Satraps ... they retain some traces of the old inscriptions in Greek characters, while on the reverse, they substitute the Gupta type ( a peacock ) for the chaitya with crescent and star.

While his two ancestors were given the title of Maharaja ( king ), Chandragupta I is described in his inscriptions as Maharajadhiraj ( king of kings ) signifying a rise in the family fortunes. He gained control over many territories by conquests and favourable marriage alliances.

This description of the Gupta dominion precedes the reign of Samudragupta and hence must refer to the territories ruled over by Chandragupta I.

Seleucus I Nicator, the Macedonian satrap of the Asian portion of Alexander's former empire, conquered and put under his own authority eastern territories as far as Bactria and the Indus ( Appian, History of Rome, The Syrian Wars 55 ), until in 305 BCE he entered in a confrontation with Chandragupta:

Accordingly, Seleucus ceded to Chandragupta his northwestern territories, possibly as far as Arachosia and received 500 war elephants ( which played a key role in the victory of Seleucus at the Battle of Ipsus ):

In 305 BC, Chandragupta defeated Seleucus I Nicator, who ruled the Seleucid Empire and controlled most of the territories conquered by Alexander the Great.

Seleucus eventually lost his territories in Southern Asia, including southern Afghanistan, to Chandragupta.

In proper history, most historians call Chandragupta Maurya the first samrāṭ ( emperor ) of the Indian subcontinent, because of the huge empire he ruled.

Demetrius may have first started to recover the province of Arachosia, an area south of the Hindu Kush already inhabited by many Greeks but ruled by the Mauryas since the liberation of the territory by Chandragupta from Seleucus.

Chandragupta Maurya (), ( born c. 340 BCE, ruled c. 320 BCE, – 298 BCE ) was the founder of the Maurya Empire.

In contrast to their successor, Chandragupta I, who is mentioned as Maharajadhiraja, he and his son Ghatotkacha are referred to in inscriptions as Maharaja At the beginning of the 5th century the Guptas established and ruled a few small Hindu kingdoms in Magadha and around modern-day Bihar.

Chandragupta II's son-in-law, the Vakataka ruler Rudrasena II, died fortuitously after a very short reign in 385 CE, following which Queen Prabhavati Gupta ( r. 385-405 ) ruled the Vakataka kingdom as a regent on behalf of her two sons.

The Greek generals Eudemus, and Peithon, ruled until around 316 BCE, when Chandragupta Maurya ( with the help of Chanakya, who was now his advisor ) utterly defeated the Macedonians and consolidated the region under the control of his new seat of power in Magadha.

The pillar was erected by Chandragupta Vikramaditya ( 375 CE – 414 CE ), ( interpretation based on analysis of archer-type Gupta gold coins ) of the Gupta dynasty that ruled northern India 320 – 540.

After Alexander's death, the valley came under the rule of Chandragupta, who ruled the valley from 297 to 321 BCE.

After Aitizaz's departure, the valley came under the rule of Chandragupta, who ruled the valley from 297 to 321 BCE.

From Pataliputra, the famed emperor Chandragupta ruled a vast empire, stretching from the Bay of Bengal to Afghanistan.