What is meant by sindh tass treaty?

The Sindh Tass Treaty, also known as the Treaty of Sindh, refers to an agreement made in 1843 between the British East India Company and the local rulers of the Sindh region in present-day Pakistan. Following the British conquest of Sindh, the treaty formalized British control over the territory, establishing terms for governance and military presence. It marked a significant step in British expansion in India and set the stage for further colonial administration in the region.