Answer:
View.
Explanation:
View is a synonym of perspective.
The European balance of power broke down was an effect following German unification is correct answer due to fact that Germany (except Austria) was united by militarist state of Prussia with powerful army which definitely change balance on the European scene especially that formal unification took place just after end of Franco-Prussian war which humiliated France.
The use of slaves was reduced, because immigrants could fulfill the same roles as slaves in factories.
The Saguenay river on the gulf of st Lawrence
The attack on the united states in september 11 2001