Greco-Bactrian Kingdom

The Greco-Bactrian Kingdom (Greek: Βασιλεία τῆς Βακτριανῆς, romanized: Basileía tês Baktrianês, lit. 'Kingdom of Bactria') was a Greek kingdom during the Hellenistic period located in Central Asia and Afghanistan. The kingdom was founded by the Seleucid satrap Diodotus I Soter in about 256 BC, and continued to dominate Central Asia until its fall around 120 BC. At its peak the kingdom consisted of present-day Afghanistan, Tajikistan, Uzbekistan and Turkmenistan, and for a short time, small parts of Kazakhstan, Pakistan, India and Iran. An extension further east, with military campaigns and settlements, may have reached the borders of the Qin State in China by about 230 BC.

A Greek population was already present in Bactria by the 5th century BC. Alexander the Great had conquered the region by 327 BC, founding many cities, most of them named Alexandria, and further settling Macedonians and other Greeks. After the death of Alexander, control of Bactria passed on to his general Seleucus I Nicator. The fertility and the prosperity of the region led to the creation of the Greco-Bactrian kingdom under Diodotus by the early 3rd century BC, as a successor state of the Seleucid Empire. The Bactrian Greeks grew increasingly more powerful and invaded north-western India between 190 and 180 BC under king Demetrius, the son of Euthydemus. This invasion led to the creation of the Indo-Greek kingdom, which in turn was a successor to the Greco-Bactrian kingdom, and was subsequently ruled by the kings Pantaleon and Apollodotus I. Historical records indicate that many rich and prosperous cities were present in the kingdom, but only a few of them have been excavated, such as Ai-Khanoum and Bactra. The city of Ai-Khanoum, in north-eastern Afghanistan, had all the hallmarks of a true Hellenistic city with a Greek theater, gymnasium and some houses with colonnaded courtyards.

The kingdom reached its peak under Eucratides the Great, who seems to have seized power through a coup around 171 BC and established his own dynasty. Eucratides also invaded India and successfully fought against the Indo-Greek kings. However, soon the kingdom began to decline. The Parthians and nomadic tribes such as Sakas and Yuezhi became a major threat. Eucratides was killed by his own son in about 145 BC, which may have further destabilised the kingdom. Heliocles was the last Greek king to rule in Bactria.

Even after the fall of the Greco-Bactrian kingdom, their rich Hellenistic legacy lasted for many more centuries. The Yuezhi invaders settled in Bactria and became Hellenized. They subsequently founded the Kushan empire around 30 AD, and adopted the Greek alphabet to write their language and added Greek deities to their pantheon. The Greco-Bactrian city of Ai-Khanoum was at the doorstep of India and was known for its sophistication and Hellenistic features. Greek art was spread by the Indo-Greeks; influencing Indian art, religion and culture, leading to a new style of syncretic art called Greco-Buddhist art.