warTimeline of the Holocaust20 eventsMajor events in the persecution and murder of European Jews under Nazi rule from 1933 to the postwar reckonin…
warTimeline of the Crusades20 eventsMajor campaigns, turning points, and political settlements in the medieval Crusades to the eastern Mediterran…
societyTimeline of Pets20 eventsA history of pets from early companion animals and ornamental species to breed culture, pet consumerism, and…
cultureTimeline of Gardens20 eventsA history of gardens from ancient irrigated enclosures and cloisters to botanical gardens, public parks, and…