Demonstrations in the Arab spring were successful in affecting the tenure of incumbent authoritarian rulers where they occurred in national capitals that were also primate cities. The outstanding examples are Tunis and Cairo. Where the national capital was not a primate city street...

Pellagra was a significant disease in late 19th century and early 20th century Egypt caused by dietary deficiencies due to the way maize was processed in the Old World after the Columbian Exchange. Understanding the interaction of given food technologies and social structures helps us to...