A fleet carrier is intended to operate with the main fleet and usually provides an offensive capability. These are the largest carriers capable of fast speeds. By comparison, escort carriers were developed to provide defense for convoys of ships. They were smaller and slower with lower numbers of aircraft carried.
The First World War was sparked in the Balkans in 1914 when members of Mlada Bosna, a revolutionary organization with predominately Serbian and pro-Yugoslav members, assassinated the Austro-Hungarian heir Archduke Franz Ferdinand of Austria in Bosnia and Herzegovina's capital, Sarajevo.
A Powder Keg in Europe. Europe dissolved into many cultures at the end of the Roman Empire. Several smaller empires emerged, but none matched the power and glory of Rome. By the turn of the twentieth-century, most of the smaller states of Europe combined or were conquered into larger nation-states.