Tarn-et-Garonne is a French department in the southwest of France. On 4th November, 1808 the department was created during the First French Empire by a verdict of Napoleon I. It was formed out of territories in the neighboring areas. Tarn-et-Garonne comprises part of the Midi-Pyrénees region. It margins the departments of Lot, Aveyron, Tarn, Haute-Garonne, Gers, and Lot-et-Garonne. More than half part of the region was taken from the Lot including Montauban and Moissac, over one-third was taken from Haute-Garonne including Castelsarrasin, and the respite from the department of Lot-et-Garonne, Gers, and Aveyron.

Tarn-et-Garonne is a department of south-western France, formed in 1808 of districts formerly belonging to Guienne and Gascony (Quercy, Lomagne, Armagnac, Rouergue, Agenais), with the addition of a small piece of Languedoc. From 1790 to 1808 its territory was alienated between the departments of Lot, Haute-Garonne, Tarn, Aveyron, Gers and Lot-et-Garonne. It is bounded at north by Lot, at east by Aveyron, South by Tarn and Haute Garonne, and west by Gers and Lot-et-Garonne. The area of the department is 1440 sq. m. he department is irrigated by three rivers, River of Garonne, River of Garonne, which connects the Garonne below Moissac, and the Aveyron, which flows into the Tarn between Moissac and Montauban, extrication it into three separate regions of hills.