Answer:
d. expanded through migration across national borders and internal migration.
Explanation:
Late nineteenth-century witnessed widespread industrialization of the United States. It was a period of great economic boost which created a new wealthy class consist of wealthy merchants, industrialists, bankers, etc. Migration from the rural area and large scale immigrants provided the required labor forces for the increased production process.
The subject or subjects being observed in classic naturalistic observation may be unaware that they are being observed.
The correct option is (B).
<h3>What is naturalistic observation?</h3>
Naturalistic observation is a technique for seeing subjects in their natural setting.
The goal is to observe behavior in an unaltered natural environment.
Researchers may keep track of what they see by making notes or tallies.
Thus, the correct statement is (B) Maybe unaware that observation is being conducted.
Learn more about naturalistic observation, here:
brainly.com/question/8187021
The Roman Empire existed from around 27 BCE until it’s fall in 1453.
True. When one has
the qualifications or the capabilities and experience necessary to get the job
done, it is called merit. It can also be
when one has passed all the requirements needed to get hired for the
position. It is not bestowed as a favor but
rather earned through a thorough screening process.