Mexico because Mexico gave 55 percent of its territory, including parts of present-day Arizona, California, New Mexico, Texas, Colorado, Nevada, and Utah, to the United States
The Ayatollah Khomeini, Iran's political and religious leader, took over the hostage situation, refusing all appeals to release the hostages, even after the U.N. ... On the day of Reagan's inauguration, the United States freed almost $8 billion in frozen Iranian assets, and the hostages were released after 444 days.
Since then the Great Wall was built, rebuilt to protect the northern borders of the Chinese Empire from the Hun's and Mongolian attacks during the rule of successive dynasties.