How were cities in the north changing during the 1800s

I'm not sure eexactly wat you are looking for here but in the 1800 many cities were being made up of immigrants, fleeing to America for a better life. They changed the demographic of these Northern Cities, and played a great part in making America what it is today.

Explanation:

s the president shall be commander in chief of the army and navy of the united states, and of the militia of the several states, when called into the actual service of the united states; he may require the opinion, in writing, of the principal officer in each of the executive departments. sooo yeahhh

explanation:

the answer to fill in the blank in this question would be the word resource, it is defined as the money, material or people (since human resource is a very valuable good) that a company or a person has at disposition (meaning they can use the resource as they see fit), to be able to complete a task or achieve a goal.