Related by context. Frequent words. (Click for all words.) 71 potato famine 63 Great Famine 53 famines 50 Famine 49 famine 44 influenza pandemics 44 Dust Bowl 44 Black Plague 44 colonists 43 #th century 43 varroa mite 43 Spanish flu pandemic 43 nineteenth century 42 the#s 42 Oliver Cromwell 41 influenza epidemic 41 #s [002] 41 Sixties 41 colonization 40 pogroms 40 bubonic plague 40 Protestant Reformation 40 twentieth century 40 Malthus 39 Colonialism 39 Acadians 39 megafauna 39 eighteenth century 39 Civil War 39 Little Ice Age 39 slavery 39 Great Depression 39 Roman Empire 39 boll weevil 39 depopulation 39 holocaust 38 forebears 38 slave rebellion 38 Middle Ages 38 colonial rule 38 l#s 38 Crimean War 38 Depression 38 Spanish conquistadors 38 Napoleonic wars 38 Colonists 38 Japanese knotweed 38 Boer War 38 Napoleonic Wars 38 Native Americans 38 Industrial Revolution 38 mass extinctions 38 abolitionist movement 37 Slave Trade 37 Dutch elm disease 37 bee populations 37 Soviet occupation 37 seventeenth century 37 Thatcherism 37 Nazi occupation 37 dustbowl 37 Puritans 37 Thirties 37 Hundred Years War 37 Prohibition 37 small pox 37 Nazi Germany 37 epidemics 37 gray squirrel 37 typhus 36 Rhodesia 36 Bolshevik revolution 36 pestilence 36 forbears 36 Second Intifada 36 fungal disease 36 Bolshevism 36 Reformation 36 Evelyn Waugh 36 descendants 36 mass migrations 36 Colony Collapse Disorder 36 Slavery 36 colonials 36 insect pest 36 zebra mussel 36 Byzantine Empire 36 descendents 36 ancestors 36 abolished slavery 36 Eighties 36 sixteenth century 36 bee colonies 36 enslaved Africans 36 Bovine TB 36 elms 36 conquistadors 36 sicknesses 36 Mormon pioneers 35 Victorian era 35 Opium War