Which of the following inventions ultimately led to the creation of the assembly line and factory system? A.) Cotton gin

B.) Steamboat

C.) Telegraph

D.) Interchageable parts

Dr. redbull conducts a study to determine whether her new energy drink children perform better on spelling tests. she randomly assigns children to one of two groups: group 1 receives her energy drink and group 2 receives water. she then gives both groups a spelling test and compares the results. which of the following is true about this study? a. group 1 is the dependent variable and group 2 is the independent variable. b. this is a correlational study. c. group 2 is the experimental group. d. the independent variable is the type of drink the children receive.

What was the result of president taft's "dollar diplomacy

Because many successful business owners fail on their first attempts, the reader should assume that.