Question

WHY WAS THE FIRST WORLD WAR?​

Answer 1

Answer:

28 july 1914-11 november 1918

Explanation:

i know only date

Answer 2

The immediate cause of World War I that made the aforementioned items come into play (alliances, imperialism, militarism, and nationalism) was the assassination of Archduke Franz Ferdinand of Austria-Hungary. ... When Russia began to mobilize to defend its alliance with Serbia, Germany declared war on Russia.