northern against the bill led to the creation of the republican party with the democratic party split then he lost the election
Answer:
c( because they were pro republican after the civil war becuase lincoln was a republican and the democrats were pro white but after the great depression and FDR who was a democrat they switched
Answer:
the third variable problem
Explanation:
Third variable: In psychological research, the term third variable is also referred to as the confounding variable and is defined as a factor except for the independent variable in research that may cause an effect to the result.
Third variable problem: The third variable i.e, the confounding variable is responsible for making a mistake in the causal relationship between the other two variables present in an experiment.
In the question above, the given statement combination of factors is known as the third variable problem.
<3hsberrExplanation:
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The answer is They were carried on boats down the rivers.
Hope I helped!
