Caused a statement where neither the Allied nor the central powers could advance there's a machine gun, tank, trench warfare, u-boat, battleship chemical weapon, gas mask airplane

Identify the type of source based on the information provided. a historian found a journal belonging to an ancient indian princess. the princess liked to keep a record of all the royal women of her dynasty who lived before her time. she tried to collect as much accurate information about their history as possible. her journal is a great source of historical information. based on the passage, the princess’s diary is source.

Brainliestt asap!me : ) describe the difference : capitalism vs. communism

Which of these events was a severe setback for the u.s. war effort in the pacific?