USA HISTORY

Detailed explanation-1: -Indigo dye is a blue coloured organic compound. It was a naturally made dye before synthetic coloring was added and it is extracted from the leaves of plants of the Indigofera genus, especially from a plant called Indigofera tinctoria.

Detailed explanation-2: -Natural indigo is obtained from a variety of plants, the most widely used one being indigofera tinctoria. This shrub grows wild and is cultivated in tropical areas throughout the world. Indigo powder-the famous blue dye-is extracted from the leaves of the indigo plant.

Detailed explanation-3: -Isatis tinctoria, also called woad (/ˈwoʊd/), dyer’s woad, or glastum, is a flowering plant in the family Brassicaceae (the mustard family) with a documented history of use as a blue dye and medicinal plant.

Detailed explanation-4: -Indigo dye is a greenish dark blue color, obtained from either the leaves of the tropical Indigo plant (Indigofera), or from woad (Isatis tinctoria), or the Chinese indigo (Persicaria tinctoria). Many societies make use of the Indigofera plant for producing different shades of blue.

Detailed explanation-5: -Indigo is a group of carbonyl compounds, one of the oldest known dyes in terms of natural blue dye derived from the Indigofera tinctoria plant.