How did the post-world war ii economic boom contribute to a blurring of the lines between the middle class and the working class?

The economic boom that was generated after WW II, was the largest economic growth of capitalism and the creator of the wide inequality between social classes, this boom created more jobs, but the vast majority was cheap labor, gender an extension of racial segregation and growth of a minority that went from middle class to ric

Explanation:

the american revolution led to the creation of a democratic republic,is the correct answer;

the right answer is the third one: turnpikes went short distances to connect markets. turnpikes, also known as toll roads, were very important for trade and transportation (of people, goods and products) in the 19th century, coinciding with the expansion towards the west. they contributed significantly to the economic development of the united states.