Which of the following events led to the decline of trans-saharan trade?
a. the arrival of columbus to the caribbean
b. the establishment of portuguese ports on the west african coast
c. the reconquista
d. the expansion of muslim empires in the mediterranean

Which piece of evidence would best support reason #1? othe history of using animals for research extends asfar back as 322 bce, when early greek physician-scientists, such as aristotle and erasistratus,performed various experiments on living animals.animal research played an essential role in thedevelopment of herceptin and tamoxifen, twomedications that have already saved the lives ofthousands of women who have been diagnosed withbreast cancer.even those who believe in testing on animals when it is hnecessary for vital medical research practice what isknown as "the 3 rs-reduction, refinement, andreplacement to reduce the number of animals usedfor testing.biologists believe that chimpanzees share at least 98.4percent of the same dna as humans and gorillas shareat least 97 percent, making primates a popular andlikely choice for the testing of products intended for humans

Sally rises every morning at 6: 30 am. after deep-breathing exercises, she dresses in sweats and sport shoes for a morning jog over the same paths in lakewood park. on average, her jog takes 23 minutes. the rest of her day also follows a formula. dinner is at 6: 30. at 7: 00, she turns on the tv to watch the national news. and so it goes. some say sally is a boring person. sally declares she is not at all boring, just well organized. the paragraph is organized by a. showing cause and effect. b. comparison. c. time. d. importance.

What does manns conclusion in "coming of age in the dawnland" indicate about how the settlements and people of sixteenth-century new england reacted to the increasing presence of europeans?