Short answers, pulled from the story.
The Taforalt cave in Morocco holds the oldest known cemetery in the world, dating back 15,100 to 14,000 years. This site contains at least 34 Iberomaurusian individuals and marks the earliest known instance of humanity designating a specific space for burial.
From the 7th century CE, the control of burial shifted decisively to the Church, restricting interments to consecrated church ground across Europe. This centralization created social stratification where the wealthy and powerful were buried in individual crypts beneath church floors while the rest of the population faced mass graves and bone storage in ossuaries.
The cholera epidemic of 1831, which claimed 52,000 lives in Britain alone, exposed the deadly dangers of burying the dead within city limits. In 1832, Parliament closed all inner London churchyards to new deposits and encouraged the construction of burial grounds outside the city to address public health concerns and overcrowding.
The first garden cemetery, Père Lachaise in Paris, opened in 1804, introducing a concept that transformed burial grounds into park-like spaces. Conceived by British architect Sir Christopher Wren in 1711, the idea of landscaped burial grounds with well-planned walkways and plantings gained traction as churchyards became overcrowded and unhealthy.
The lawn cemetery was introduced by Adolph Strauch in Cincinnati in 1855, representing a radical departure from Victorian style monumental headstones. This new style favored flat plaques set into the ground to facilitate easier maintenance and allowed for the use of large, efficient mowers without damaging the markers.
Natural cemeteries, also known as eco-cemeteries or green cemeteries, prioritize environmental consciousness and the rapid decomposition of the body without the environmental cost of traditional burials. The absence of conventional grave markings such as headstones is replaced by GPS recordings or the planting of trees, bushes, or rocks to mark the location of the dead.