Enlightenment ideals eventually led to the French Revolution.
The answer should be C. Nirvana. To end the suffering of one in the Buddhist way, it is said you need to go through the Eightfold Path, which is the path to Nirvana.
One major purpose for the creation of workingmen's party was to protect the average American worker from things like debtors prison, and to provide for universal suffrage for men of all backgrounds and working platforms.
The immediate cause of World War I that made the aforementioned items come into play (alliances, imperialism, militarism, nationalism) was the assassination of Archduke Franz Ferdinand of Austria-Hungary. When Russia began to mobilize due to its alliance with Serbia, Germany declared war on Russia.