Across which body of water would traders travel to get from mesopotamia to the indus river valley

In which research method does a researcher change the value of one variable to determine how the change affects another variable? a. experiment b. observational research c. survey d. case study

Should the government in china restrict the rights to the media/social media? why or why not?

The renting agent says i have to rent for at least one year. but i’m not sure how many months i’ll be in town.