Farming, especially cotton farming, thanks to eli whitney's cotton gin
<span>Increased Islamic extremism against the US and Western ideology in the Middle East.
At the center of this increased Islamic extremism was the Ayatollah Ruhollah Khomeini. "Ayatollah" is the title for a Shiite Muslim religious leader. The Shia branch of the Muslim faith is the dominant religious group in Iran. The Islamic Revolution, inspired by Khomeini, ousted the shah of Iran from power. The shah was a political leader who had been supported by the United States.</span>
D. Building their own roads from stone and clay
The goal was to be an example to the rest of the world.