Ottoman provinces were re-formed and cobbled together into states. The region was carved up with little regard to ethnic, religious, or territorial concerns. The flawed and cavalier treaties of World War I explain to a large degree why the Middle East remains unstable and angry today. Every Muslim schoolchild is taught this arc of history and resents it: Islam’s golden era of the Arab caliphate, the Crusades, the Mongol devastation, the rise of the Ottomans, World War I, the carving up of the Middle East by Europe, and the poverty, weakness, and wars in the Muslim world of the last century. This is the basic and sad narrative taught at every mosque, and it has the benefit of being broadly accurate.