You are traveling south through the Gobi Desert and decide to go rafting. You head south and raft in the first river you come to. Which river is it? A) Yangtze River
B) Indus River
C) Ganges River
D) Yellow River

Who built the first turnpikes in the united states? a) the national government b) state governments c) private companies d) town councils

Psychologists studying infant memory want to determine at what age babies can remember specific events. an experimenter uses several puppets to demonstrate a series of actions while the infant watches. after a delay, the experimenter records how many of the actions the child imitates when playing with the puppets. what is the dependent variable?

Immigrants arriving in the united states during the late 1800s experienced many difficulties. which of the following was a problem which large numbers of immigrants faced?