30. low

Review Lessons 31-3 and 32-1 in your study guide and pages 845, 853-855 in your textbook.

Read the "Great Recession" information and answer questions 28-30.

Between 2008 and 2010, the United States experienced its worst economic crisis since the

Great Depression. Dubbed "The Great Recession," this crisis was largely a result of a financial

meltdown that took place in 2007 and 2008. Although economists disagree about the exact

source of the meltdown, many believe that it was first caused by the 2006 bursting of the

housing bubble. The effects of the housing bubble spread quickly throughout the financial sector,

leading to a credit crunch that hurt businesses and consumers alike and resulted in widespread

unemployment. During the mid-2000s, the American economy was growing rapidly. Mortgages

and housing prices were central to this economic boom. Because people were making so much

money by selling their home

answer; /// the correct answer is evidence of the olmec civilization has been found in southern american in a hot steamy forest, archaeologists have found earthen artifacts at several sites that were evidence of the olmec civilization. these   artifacts were mounds,courtyards and pyramids build of stones, also on top of the mounds were many monuments made of stone, some of these stone structures are very large, they weigh as much as 44

i'd assume india mainly because of how isolated japan was.   plus it is a whole china away.

answer:   migrations were important in the neolithic period. "two major migrations passing through southeastern europe were confirmed by the means of archaeo-genetic studies."

the first migration was the early neolithic period -- 6,000 before common era (bce) -- when the first farmers, from anatolia -- asia minor -- spread through europe. the second migration occurred during the early bronze age (3,000-2,500 bce) when the so-called "steppe population," from the eurasian steppe, replaced much of northern europe's previous population.

the first farmers of northern and western europe passed through southeastern europe with limited hunter-gatherer genetic admixture, which occurs when two or more previously isolated populations begin interbreeding. however, some groups that remained mixed extensively -- without the male-biased, hunter-gatherer admixture that prevailed later in the north and west, according to latest discoveries. southeastern europe continued to be a nexus between east and west, with intermittent genetic contact with the steppe people up to 2,000 years before the migrations that replaced much of northern europe's population.

"in some places, hunter-gatherers and incoming farmers seem to have mixed very quickly," says iain mathieson, a geneticist at the university of pennsylvania, who was first author of the paper. "but, mostly, the two groups remained isolated, at least for the first few hundred years. these hunter-gatherers had been living there for thousands of years, and it must have been quite a shock to have these new people show up -- with a completely different lifestyle and appearance."