[1] The migrating Indo-Aryan tribes gave rise to the Iron Age vedic civilization, which lasted till 500 BC.
[7] Southworth suggests that the name Sindhu is in turn derived from Cintu, a Dravidian word for date palm, a tree commonly found in Sindh.
Built around 2500 BCE, it was one of the largest settlements of the ancient Indus civilisation or Harappan culture, with features such as standardized bricks, street grids, and covered sewerage systems.
[11] It was one of the world's earliest major cities, contemporaneous with the civilizations of ancient Egypt, Mesopotamia, Minoan Crete, and Caral-Supe.
[18] The capital of Sindhu-Sauvīra was named Roruka and Vītabhaya or Vītībhaya, and corresponds to the mediaeval Arohṛ and the modern-day Rohṛī.
The territory may have corresponded to the area covering the lower and central Indus basin (present day Sindh and the southern Punjab regions of Pakistan).
Siltation has caused the Indus to change its course many times since the days of Alexander the Great, and the site of ancient Patala has been subject to much conjecture.
[32] The Ptolemy world map, as well as the Periplus of the Erythraean Sea mention prominently, the country of Scythia on the Indus Valley, as well as Roman Tabula Peutingeriana.
– >641 AD) — primarily on the basis of numismatic and literary evidence[c] — identifying the first two Rais as Hunas and the later three as rulers of Zabulistan and Khorasan.
[54][d] However, there exists little historical evidence to favor the proposition of Hunas ever making to Sindh and the individual bases of his hypothesis stands discredited in modern scholarship.
[54][e] Harshacharitta, a biography written by Banabhatta mentions King Harsha badly defeated the ruler of Sindh and took possession of his fortunes.
[58] After the death of the Islamic prophet Muhammad, the Arab expansion towards the east reached the Sindh region beyond Persia.
[65] In 712, when Mohammed Bin Qasim invaded Sindh with 8000 cavalry while also receiving reinforcements, Al-Hajjaj ibn Yusuf instructed him not to spare anyone in Debal.
[66] According to the Chach Nama, after the Arabs scaled Debal's walls, the besieged denizens opened the gates and pleaded for mercy but Qasim stated he had no orders to spare anyone.
Rizvi citing the Chach Nama, considers that conversion to Islam by political pressure began with Qasim's conquests.
[70][71] The Habbari ascension marked the end of a period of direct rule of Sindh by the Umayyad and Abbasid Caliphates, which had begun in 711 CE.
The Habbaris were based in the city of Mansura, and ruled central and southern Sindh south of Aror,[72] near the modern-day metropolis of Sukkur.
[78][79] The Ghurids and Ghaznavids continued to rule parts of Sindh, across the eleventh and early twelfth century, alongside Soomrus.
Mohammad bin Tughlaq made an expedition against Sindh in 1351 and died at Sondha, possibly in an attempt to restore the Soomras.
The next sultan, Firuz Shah Tughlaq attacked Sindh in 1365 and 1367, unsuccessfully, but with reinforcements from Delhi he later obtained Banbhiniyo's surrender.
He founded a new city Khudabad after he obtained from Aurangzeb a grant of the track between the Indus and the Nara and made it the capital of his kingdom.
Later he extended his rule to Sehwan and Bukkur and became sole ruler of Northern and central Sindh except Thatto which was still under the administrative control of Mughal Empire.
Mian Ghulam Shah Kalhoro reorganised and consolidated his power, but his son lost control of Sindh and was overthrown by Talpurs Amirs.
Distance from the provincial capital, Bombay, led to grievances that Sindh was neglected in contrast to other parts of the Presidency.
However, the local Sindhis were described as both eager and lazy and for this reason, the British authorities encouraged the immigration of Punjabi peasants into Sindh as they were deemed more hard-working.
This reflected the desire of Sindh's predominantly Hindu commercial class to free itself from competing with the more powerful Bombay's business interests.
[112][113][114] In Sindh's first provincial election after its separation from Bombay in 1936, economic interests were an essential factor of politics informed by religious and cultural issues.
Even while the Punjab and North-West Frontier Province were ruled by parties hostile to the Muslim League, Sindh remained loyal to Jinnah.
[118] The Muslim League's rise to becoming the party with the strongest support in Sindh was in large part linked to its winning over of the religious pir families.
A large number of Sindhi Hindus travelled to India by sea, to the ports of Bombay, Porbandar, Veraval, and Okha.