The Devonian is one of the seven periods of the Paleozoic Era. It lasted for 50 million years, from 410 million years ago until 360 million years ago. It is the period in which the first insects evolved, the first seeded plants, as well as the first land vertebrates. This period came after the Silurian period, and was followed by the Mississippian period.
The answer is D because when I learned A couple of weeks ago before we started the American Revolution last week my social studies teacher said that indigo was a pigment for clothes for mercantilism.