The answer that you're seeking is, "Trains from different rail lines could use each other’s tracks." The standardization of rails allowed trains to use eachothers tracks and increase speed and efficieny in deliveries. Hope I helped!
The battle of Alesia was fought by the army of Julius Caesar against the Gallic tribes under the leadership of Vercingetorix. It took place in 52 BC, around the Gallic oppidum of Alesia ( in Burgundy, France ). It marked the end of the Gallic independence in France and Belgium ).Answer: The battle of Alesia.
It was proposed by US president Woodrow Wilson at the Paris Peace Conference after wwi and gained the support of other nations.
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Colonization took away resources and land that belonged to the natives
