The OPEC oil embargo was an event where the 12 countries that made up OPEC stopped selling oil to the United States. In response to the oil crisis, the United States took steps to become increasingly energy independent.
The correct answer is D) Emperors communicated using runners from the capital city of Cuzco.
This was a characteristic of the Inca civilization: "Emperors communicated using runners from the capital city of Cuzco."
The Inca were one of the most important civilizations in South America in Prehispanic times. They settled in the mountains called "Anders" in Peru and built the impressive city of Macchu Pichu. People lived in modest houses made of stone and as they lived in the mountains, they worked as farmers to make a living building "terraces," portions of flat land where they could grow crops.
The answer is, Battle of Fort McHenry
