After escaping, Tintin discovers a source of underground petroleum, following which the U.S. army forces the Natives off their land, and oil companies build a city on the site within 24 hours.
Tintin discovers a source of underground petroleum. This is following. The U.S. army forces the Natives off their land. Tintin is escaping. Oil companies build a city on the site within 24 hours. Oil companies are escaping.