单选题 For almost as long as people have worn clothes, they have been interested in using bright dyes to make their clothes beautiful. The earliest dyes available were derived from plants and animals. Indigo, a blue dye, was made from a plant. A thousand years before the Christian era, in the ancient Phoenician city of Tyre, a purple dye called Tyrian purple was made from a Mediterranean shellfish. The dye was so prized that its manufacture and export made Tyre ______