Answer:They help ensure that changes in the independent variable are affecting the dependent variable.
Explanation:E2022
c. Philippines
b. The Soviet Union
d. Great Britain
Answer: If the silk road never developed things would be different. They would be different because they wouldn't be able to get the things they needed. Also things might be different today in modern day China.
Explanation:
Antarctica and the Northern Poles.
auto workers.
weavers.
The answer is child workers...just took the test and it is the right answer....Its right trust me.