It was primarily the "b. formation of the Vietcong in Vietnam" that led the Truman administration to expand the containment doctrine to include Asia, since this was seen as a threat to democratic principles in the west as well.
They wanted access to more raw goods and natural resources.
An unexpected condition that some immigrants found in factories in the early 1900s was c. factories were sometimes quite dirty.
<h3>What were factories like in the early 1800s?</h3>
Factory owners were only interested in making profits and did not care about the welfare of their workers.
As a result, factories were often quite dirty and unsafe which led to work accidents.
Find out more on factory conditions in the early 1900s at brainly.com/question/10583855.
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Answer: the Union believed in a unitary country, free from slavery and based on equal rights; conversely, the Confederates did not want to abolish slavery