Ap World History- Just asking what the answer is

Which of harriet martineau’s books is a foundational treatise on sociological data collection?

Which of these would be most useful in studying the effect of germs exchanged between the new and old worlds? a. a graph showing the number of europeans between 1492 and 1600. b. a graph showing the number of native americans between 1492 and 1600. c. a primary source description of the symptoms of an unknown disease affecting native americans in 1492. o d. a primary source description of the symptoms of an unknown disease affecting europeans in 1492.

With the california gold rush and the opening of the west came an increased interest in building a transcontinental railroad the first chinese were hired in 1865 at approximately $28 per month to do the very dangerous work of blasting and laying ties over the treacherous terrain of the high sierras in the beginning was slow and conquer the many embankments, the chinese workers used techniques they had learned in china to complete similar tasks. they were lowered by ropes from the top of cliffs in baskets, and while suspended, they chipped away at the granite and planted explosives that were used to blast tunnels1.* 11b this passage reflects workingefforts and conditions of which corporation? a. the transcontinentalrailway line b. the union pacific company c. the central pacific company d. the norfolkwestern company