Both can transfer energy through matter, but sound waves travel through air and infrared waves travel through space.
Culture: Christianity in Africa. Towns become sophisticated.
Society: more women than men because men 14 - 35 were the most profitable slaves. Women had to do men's jobs. Polygamy. Life got more dangerous because of guns.
:)
Brown v. Board of Education (1954). The case ruled that segregated public schools were unconstitutional on the grounds that "separate could never be equal." The case overturned Plessy v. Ferguson, a landmark and deeply racist Supreme Court decision from 1896 that had allowed segregated education.
According to Perry Rogers, one reason the Chinese were unsuccessful in halting the opium <span>trade was because the country had come to depend on it for revenue. </span>
Because they were running low on food and they on that ship for days
