Following in a line of Persian dynasties stretching back 3,000 years, the Pahlavi dynasty was founded early in the twentieth century. The 1979 revolution replaced the monarchy with an Islamic republic. After the death of his father, Mohammad Reza Pahlavi, he symbolically declared himself Shāhanshāh at the age of 21.In September 2017, Pahlavi left his position as the leader of the National Council of homeland.As Crown Prince of homeland, Pahlavi left homeland in 1977 at the age of 17 for air force training at Reese Air Force Base near Lubbock, Texas, two years before the persian Revolution.