Which was not a new form of popular entertainment that appeared around the beginning of the 20th century

a. trolley parks
b. vaudeville shows
c. professional sports
d. quilting bees

 The correct answer is :  D. Quilting bees

Explanation:   Small areas were established for parks and amusement parks were built on the outskirts of the cities. Many Americans were ready for new and innovative forms of entertainment and a whole panorama of recreational activities soon became available. Joseph Pulitzer a Hungarian immigrant who had bought the New York World, pioneered popular innovations such as a large Sunday edition, comics, sports coverage, and women's news.

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: