Another name for World War I is . Nationalism, alliances, militarism, and were all long-term causes of World War I.
had people of diverse ethnicity who spoke many languages. It included the nations of Serbia, Bulgaria, Greece, and Montenegro.
The longest battle of World War I was .
was the leader of the Bolsheviks and successfully led the Russian Revolution.
The was the alliance that included Germany, Austria-Hungary, and Bulgaria.
The United States declared war on Germany after discovering that the Germans made an offer to Mexico in the .

Another name for Word War One is The Great War.

Nationalism, Alliances, Militarism, and imperialism.

I don’t know the third question.

The longest battle of WW1 was the Battle od Verdun.

Vladimir Lenin was the leader of the bolsheviks and successfully led the Russian Revolution.

The Triple-Alliance was the alliance that included Germany, Austria-Hungary, and Bulgaria.

I dont understand this question, but Germany promised to help Mexico recover the territory it had lost during the 1840s, including Texas, New Mexico, California, and Arizona, which is why the United States declared war.