The correct answer is letter A. The belief that Senators need to be able to express themselves without constraints. The atmosphere in the Senate is so informal because is the belief that Senators need to be able to express themselves without constraints. Without constraints, there'll be more arguments to talk about.
Answer: The government thought Native Americans stood in the way of westward expansion.
Answer:
replication
Explanation:
Replication is the term given to experimental process which uses the same methodology which was used in one study to deduce result in other independent study. This is done in cases in which cause and effect nature are similar in nature.
For example: In one study it was observed that use of simulation eases understanding concept of physics. Then another study can be researched if simulation can aid understanding concepts of other subject or not.
In the given problem same experimental setup is used to study different research subject hence replication is the correct answer.