Why was it so difficult to resolve such issues as the spoils system, the tariff, and bimetallism, which consumed congressional energies in the late nineteenth century ?

Corruption

Explanation:

it is so difficult to find solutions to such issues as the spoils system, the tariff, and bimetallism, which drained congressional energies in the late nineteenth century because of corruption. The United States government was very corrupt during the said period.

In the nineteenth century, most government officials were only after their personal gain and doesn't have the interest of the nation and the citizens at heart. During the time many corrupted government officials made lot of money or acquired power from the spoit system, the tariff, and bimetallism, This act made it extremely difficult to make free of corrupt ideas from the system.

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:

the space race was a battle to make advanced technology to get to the moon and to get a better understanding of space.