Abbasids dynasty that ruled in Bagdad from 750–1258
abdicate to give up or step down from power
abolition movement the campaign against slavery and the slave trade
absentee landlord one who owns a large estate but does not live there
absolute monarch ruler with complete authority over the government and lives of the people he or she governs
abstract style of art composed of lines, colors, and shapes, sometimes with no recognizable subject matter at all
acculturation the blending of two or more cultures
acid rain a form of pollution in which toxic chemicals in the air come back to Earth in the form of rain, snow, or hail
acropolis highest and most fortified point within a Greek city-state
acupuncture medical treatment, originated in ancient China, in which needles are inserted into the skin at specific points to relieve pain or treat various illnesses
adobe a mixture of clay and plant fibers that becomes hard as it dries in the sun and that can be used for building
Adulis strategic trading port of the kingdom of Axum
Afghanistan an Islamic country in Central Asia; invaded by the Soviet Union in 1979; later home to the radical Islamist Taliban and the terrorist al Qaeda
African National Congress the main organization that opposed apartheid and pushed for majority rule in South Africa; later a political party
agribusinesses giant commercial farms, often owned by multinational corporations
ahimsa Hindu belief in nonviolence and reverence for all life
aircraft carriers ships that accommodate the taking off and landing of airplanes, and transport aircraft
al Qaeda a fundamentalist Islamic terrorist organization led by Saudi Arabian Osama bin Laden
Alexandria an ancient Hellenistic city in Egypt
alliance formal agreement between two or more nations or powers to cooperate and come to one another's defense
alphabet writing system in which each symbol represents a single basic sound
Alsace and Lorraine provinces on the border of Germany and France, lost by France to Germany in 1871; regained by France after WWI
Amritsar massacre an incident in 1919 in which British troops fired on an unarmed crowd of Indians
anarchist someone who wants to abolish all government
ancien régime old order; system of government in prerevolution France
anesthetic drug that prevents pain during surgery
animism the belief that spirits and forces live within animals, objects, or dreams
annex add a territory to an existing state or country
Anschluss union of Austria and Germany
anthropology the study of the origins and development of people and their societies
anti-ballistic missiles missiles that can shoot down other missiles
anti-Semitism prejudice against Jews
apartheid a policy of rigid segregation of nonwhite people in the Republic of South Africa