The Congress established the federal court system in The Judiciary Act of 1789.
hope this helps:)
The answer is the last choice, commonality.
Many Americans objected to the settlement
Shah Reza Pahlavi was a brutal dictator, but his departure did not mean Iran was more free. The Shah was pro-west, and would brutally crack down on any dissent. He was replaced by Ayatollah Khomeini, who helped to install a religous dictatorship in Iran. Everything that the Shah had stood for --- including the western world --- was now seen with open contempt by the government.
