Mowgli's mastery and control of the fire represents B. his mastery and control over the animals of the jungle. The animals of the jungle fear the "red flower" and do not call it fire because only man can call it that as they do not fear it. When Mowgli learns how to use the fire, he brings it to the meeting and displays his power with the fire and makes all the animals respect him as new leader.
The lost empire. There you go.
Faustus's downfall is marked by A. his increasingly dangerous use of the black arts.
He sold his soul to the devil in order to gain all the knowledge in this world. He didn't want glory or riches, he only wanted to know absolutely everything there was to know in the world. The more he knew, the more he wanted, which is what led to his downfall.