Related by context. Frequent words. (Click for all words.) 74 Irish potato famine 67 potato famine 63 potato blight 63 Great Famine 53 Famine 52 famines 49 eugenics movement 49 honeybee colonies 48 Dust Bowl 47 Norman Conquest 46 twentieth century 46 phylloxera 46 famine 46 transatlantic slave trade 45 fourteenth century 45 #th century 44 Salem Witch Trials 44 Spanish flu pandemic 44 nineteenth century 43 chattel slavery 43 Depression 43 locust plague 43 polio epidemic 42 megafauna 42 Colonialism 42 influenza pandemics 42 induced famine 42 Fertile Crescent 42 Middle Ages 42 varroa mite 42 l#s 42 Little Ice Age 41 Civil Rights Era 41 eighteenth century 41 Thalidomide 41 Sixties 41 boll weevil 41 twentieth centuries 41 holocausts 40 Phytophthora 40 Droughts 40 Mormon pioneers 40 Medieval Warm Period 40 insect pest 40 Slavery 40 Tsarist Russia 40 Canker 40 overhunting 40 pogroms 40 chytrid fungus 40 witch trials 40 Pope Leo XIII 40 Younger Dryas 40 sixties 40 Byzantine Empire 40 Africville 40 trans Atlantic slave 40 #s [002] 40 Thirties 40 Civil War 39 Dutch elm disease 39 Black Plague 39 Bolshevism 39 Roman Empire 39 fungal disease 39 blight 39 Gukurahundi 39 Industrial Revolution 39 Cultivated 39 influenza epidemic 39 Jamestown Va. 39 bee colonies 39 onset Alzheimer 39 Cretaceous Period 39 Great Depression 39 colonization 39 holocaust 39 Whittaker Chambers 39 Communist regimes 39 Fifties 39 disease 39 Colony Collapse Disorder 39 parasitic disease 38 Oliver Cromwell 38 depopulation 38 bee populations 38 nutritional deficiency 38 Balkan conflicts 38 Desertification 38 the#s 38 Triangle Shirtwaist Factory 38 Moravians 38 Yugoslav wars 38 Twenties 38 Fusarium 38 thirteenth century 38 Progressive Era 38 Reformation 38 Massive Resistance 38 Mayan civilization 38 root rot