| The first known settlements of Sindh go back to 7000 BCE; the settlers
were aboriginal tribes. Around 4000 BCE people from the Iranian plateau,
Dravidians, invaded Sindh and created farming settlements. As they
grew in numbers, the Dravidians settlements lead to Urbanization and
eventually the Indus Valley Civilization. Some of the first towns in
Sindh are Kot Diji and Amri. The people of Kot Diji were advanced,
having an almost pictographic script, which as of now remains un-deciphered.
The village of Amri has been dated back to around 3600 to 3300 BCE
and consisted to more than 160 communities. No writing was found at
Amri, which prospered until 2500 BCE when a fire swept through the
town. |

Ancient
Seals and Writing |
| The largest discovered civilization of the time is Mohen-jo-daro.
Built around 3000 BCE, Mohen-jo-daro was an agricultural city made
up on a map of streets, with buildings of baked bricks and an advanced
draining system. The civilization was sophisticated, having a language
yet to be understood, buildings up to two stories high, a bath area
with a layer of tar to prevent leakage, and large granaries. At its
peak, Mohen-jo-daro most likely held around 35,000 people. The city
was ruined, most likely from flooding of the Indus, and rebuilt at
least seven times. Mohen-jo-daro was deserted around 1700 BCE. It is
thought that this was because the Indus River changed course and therefore
no longer supported the city. |

Picture of Mohen-jo-daro |
| Before the Indo-Iranian invasion, the Indo-Aryans are
believed to have invaded and founded the Vedic Civilization around
1500 BCE. The Aryans influenced the Indus Valley Civilization and later
cultures in South Asia. Most importantly, perhaps, they established
the Caste system, placing themselves above the native people. This
system banned intermarriage and essentially enslaved the aboriginals. |
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