What led to the iran hostage crisis?

On November 4, 1979, a group of Iranian militants stormed the American embassy in Tehran, Iran, and captured dozens of embassy and military personnel. For 444 days, fiftytwo Americans remained captive in Iran, while their nation waited, hoped, and hung yellow ribbons. The outcome of the hostage crisis would ultimately change the course of a presidency, and malign relations between two powerful nations.

The origins of anti-American fervor. In the early 1970s, America and Iran enjoyed mutually satisfying relations. At the time, the country was ruled by Shah Mohammad Reza Pahlavi, a man the American government had supported for more than twenty-five years. Pahlavi had risen to power thanks to British and Soviet forces, which jointly installed Pahlavi on the throne in 1941 to gain valuable influence over the country's oil. Two years later, the United States and Great Britain made a formal declaration to promote Iran's independence, primarily to prevent the communists from gaining a strong foothold in the country.

i believe its the indians