A city built of white stone, Amman's growth has skyrocketed since it was made the capital of Trans-Jordan in the early 1920s, but especially after the 1948 and 1967 wars with Israel when hundreds of thousands of Palestinian refugees settled. Another wave arrived after the second Iraq war, with Iraqi refugees forming the majority of newcomers. Its history, however, goes back many millennia. The settlement mentioned in the Bible as Rabbath Ammon was the capital of the Ammonites, which later fell to the Assyrians. It was dominated briefly by the Nabataeans before it became a great Roman trade center and was renamed Philadelphia. After the Islamic conquests, Amman became part of the Muslim empire, until the Ottomans were forced out by the Allies, with the help of the Hashimites, who formed a monarchy that continues to rule until the present. Today, ''West'' Amman is a lively, modern city. The eastern part of the city, where the majority of Amman's residents live, is predominantly the residential area of the working class and is much older than the west. While possessing few sites itself, Amman makes a comfortable base from which to explore the northwestern parts of the country.Amman is a very diverse city. Palestinian, Iraqi, Circassian, Armenian,and many other ethnic groups reside in Amman. Amman was damaged because of the events of Black September but the city was rebuilt. Amman never stops growing. The city went from 20,000 inhabitants to more than 2 million people in less than a century partly because of massive influxes of refugees from Palestine and Iraq.Most Jordanians understand English so communication shouldn't be that much of a problem but it never hurts to know a few useful phrases and come prepared with a translation book. http://wikitravel.org/en/Amman