Answer:
The action of making a person or thing American in character or nationality
One of the main characteristics of american imperialism in the late 19th and early 20th centuries was the idea of "Manifest Destiny", which held that the US was "destined" to expand.
ANSWER: A. By questioning whether their sources are reliable.
EXPLANATION: Early historians used unreliable sources to write history. They had to believe mainly on sources which were believed by people. Modern day historians has many instruments and theories to prove an incident of history. Scientific advancements has helped calculate the accuracy of any event. Carbon dating is one of the many scientific advancements helping modern day historians. This test helps them to find out the age of any fossil found, thus giving an accuracy and reliability of the sources which will be documented.