The answer is A) Christopher Colombus
Answer:
c) Alliances required nations to defend each other against aggression.
Explanation:
Secret alliances were formed prior to the outbreak of the war. After the Assassination of Franz Ferdinand the Archduke of Austria-Hungary the alliance systems went into effect leading to many nations protecting one another.
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Hi!
It would be a problem because they could have different opinions on life, including government opinions. If you shoved them together, even more conflict would happen.
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D, it shows the extent to which the united states