The correct answer to this open question is the following.
Although there are no options attached, we can say the following.
The effect of a lack of a navy have on American shipping was that it made the United States vulnerable against its enemies and had no ideal response in case of innovation. The lack of a proper navy did not allow the United States to support the transportation of goods and people in case of a conflict. It also made the US dependent on the navy of foreign countries such as Great Britain.
After the Revolutionary War, the US dropped the idea of having a formal navy. After 40 years without it, the end of the War of 1812 made politicians think about having some ships. From 1812 to 1860, the US navy was practically small compared to European superpowers.
Answer:
Immigrants to work in steel mills
Explanation:
I don't know if I'm right, but it sounds like it. There was more immigration from Europe, so they must need those immigrants to take jobs at steel mills, to produce munition plants, and to work at stockyards. This is just my best guess.
C hope that helps have a great day
In general, the "expansion of states" has been a terms used to describe the addition of new states to a union of states, such as when the US expanded west in the 1800s.