Are these complete sentences, or is one of them a fragment? -Leslie Winkle's teammates told her that their camouflage uniforms would never work. Especially because they accidentally used glow-in-the-dark thread.-

Especially because they accidentally used glow-in-the-dark thread

Explanation:

While the sentence "Leslie Winkle's teammates told her that their camouflage uniforms would never work", the second sentence cannot stand on its own and is not an independent clause and is rather dependent.

eli whitney was an american inventor best known for inventing the cotton gin. this was one of the key inventions of the industrial revolution and shaped the economy of the antebellum south.

the answer is not