As a result of the system of mass production, the majority of factory owners replaced skilled workers with unskilled workers.
eliminated women workers and hired only male workers.
used only child laborers.
replaced unskilled workers with skilled workers.

the answer is d trust me

john f. kennedy purpose was to make his argument a strong appeal to emotion in order to make an impact and connection to american citizens. he want to achieve peace by telling the citizens they shouldn't be afraid of other nations.

explanation:

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.