Images

_et('6'); The period of the “Barracks Emperors” coincides with the Crisis of the Third Century (235–284 CE), one of the most turbulent phases in Roman history. Beginning with the assassination of Severus Alexander (reign 222–235 CE), imperial authority...

_et('6'); The reign of Ivan IV (Grozny, "the Terrible") of Russia (reign 1547–1584) marked a definitive transformation in the political structure of the realm of Moscow. Crowned as the first “Tsar of all Russia” in 1547, drawing on the imperial legacy...

_et('6'); An 1873 map showing the various expeditions in Africa undertaken by the Scottish missionary and explorer David Livingstone (1813-73) from 1851 until his death. Gutenburg Project

_et('6'); A satellite image by the European Space Agency (ESA) of Africa's Great Lakes. Top centre is Lake Victoria. Bottom left is Lake Tanganyika. Top left is Lake Albert.

_et('6'); An 1872 photograph of the American-British journalist and explorer Henry Morton Stanley (1841-1904). Smithsonian Libraries and Archives

_et('6'); An 1864 photograph of the English explorer Richard Francis Burton (1821-90).

_et('6'); An engraving of an original photograph of the English explorer John Hanning Speke (1827-64), who identified Lake Victoria as the source of the Nile River in 1857.

_et('6'); An 1864 photograph by Thomas Annan of the Scottish missionary and explorer David Livingstone (1813-73). National Galleries of Scotland

_et('6'); A colour illustration of Victoria Falls by Thomas Baines (1820-75), who accompanied explorer David Livingstone (1813-73) on his Second Zambezi Expedition (1858-64). The falls are located on the border of Zambia and Zimbabwe.

_et('6'); At the time of Philip II’s death (reign 359–336 BCE), the Kingdom of Macedon had emerged as the dominant power in the Hellenic world. Through sustained military reform, most notably the development of the Macedonian phalanx, and a combination...