What are the causes and affects in key events that happened in war war one

Politics, covert alliances, imperialism, and nationalistic ambition were among the true causes of World War I. There was a single incident, though, the assassination of Archduke Ferdinand of Austria, which began a series of events leading to war.

Explanation:

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these the citzens and goverment come to terms some of the amendments gave the states more power then the goverment and some protocted americans rights