By traveling through the Oregon Trail on wagon trains together, people could rely on each other for survival.
The world war 2 is the answer I think not sure
Explanation:
Led by Bolshevik Party leader Vladimir Lenin, leftist revolutionaries launch a nearly bloodless coup d'État against Russia's ineffectual Provisional Government. Bolshevik Russia, later renamed the Union of Soviet Socialist Republics (USSR), was the world's first Marxist state.
