how did bosses and political machines control city governments?

They control city governments because Many machines formed in cities to serve immigrants to the U.S. in the late 19th century who viewed machines as a vehicle for political enfranchisement. Machine workers helped win elections by turning out large numbers of voters on election day.

Explanation:

world war i began in 1914, after the assassination of archduke franz ferdinand, and lasted until 1918. during the conflict, germany, austria-hungary, bulgaria and the ottoman empire (the central powers) fought against great britain, france, russia, italy, romania, japan and the united states (the allied powers). to new military technologies and the horrors of trench warfare, world war i saw unprecedented levels of carnage and destruction. by the time the war was over and the allied powers claimed victory, more than 16 million people—soldiers and civilians alike—were dead.

explanation: