how does the author establish a dark, ominous tone suggestive to death? give examples

The year is 1775 and the settings are London and Paris, two lands ruled by monarchs. England is on the brink of the American Revolution. The French Revolution seems inevitable, with trees waiting to be converted to guillotines and the spirit of rebellion silently infecting the countryside. Similar disturbances are common across England, with highway robberies on the increase and thievery reaching all the way into high society. Executions are common for both minor and major offenses.