Here are some of the key moments in U.S.-Iranian relations during the Iranian Revolution:
* In 1953, the United States helped to overthrow Iranian Prime Minister Mohammad Mosaddegh in a coup d'état. Mosaddegh had nationalized the Iranian oil industry, and the U.S. was concerned about the potential loss of access to Iranian oil.
* In 1978, widespread protests against the Shah began in Iran. The U.S. initially supported the Shah, but as the protests grew larger and more violent, the U.S. began to distance itself from him.
* In November 1979, the U.S. Embassy in Tehran was taken over by Iranian militants and 52 Americans were held hostage for 444 days. The hostage crisis further damaged U.S.-Iranian relations.
* In 1980, the United States imposed economic sanctions on Iran in retaliation for the hostage crisis. The sanctions have been in place ever since and have had a significant impact on the Iranian economy.
* In 2003, the United States invaded Iraq, which is neighboring Iran. The invasion led to increased tensions between the United States and Iran.
* In 2015, the United States and Iran reached an agreement on Iran's nuclear program. The agreement was designed to prevent Iran from developing a nuclear weapon. However, the agreement was later withdrawn by the United States in 2018.
The United States and Iran have a long history of conflict and mistrust. The Iranian Revolution is just one example of the many events that have contributed to this strained relationship.