The settlers became successful farmers and built housing and factories. Unfortunately, the Native Americans lost their land and had to live on small reservations. In conclusion, the Westward Expansion led to America becoming a superpower.

4 0

2 years ago

A researcher becomes aware that the judges he is using to make observations are becoming more proficient at their task. This imp

S_A_V [24]

Answer:

Instrumentation

Explanation:

Instrumentation internal validity threat:

There are seven instruments internal threat are as follows:

Temporal threat

History threat

Maturation

Attrition

Testing

Instrumentation: It is very important for research that the instrument used for the research should be accurate in their measurement because its accuracy will be responsible for the outcomes of the study.

Sampling

Regression

5 0

3 years ago