Answer:
The completion of the Transcontinental Railroad
Explanation:
Transcontinental Railroad was completed in 1869 by the Central Pacific and the Union Pacific Railroad Companies. The railroad link the eastern part of the United States to the western part of the United States.
This later led to many more settlers to move west. As the journey seems easier and the prospect of moving to the west to start afresh and get abundant land appeals to people at the time.
His efficient assembly line made cars a lot cheaper to produce
Advantages
<span><span>Stability: Two-party systems are more stable than multi-party systems
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Moderation: The two parties must appeal to the middle to win elections, so the parties tend to be moderate.
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Ease: Voters have only to decide between two parties.
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