What role did consumers play in slowing the economy down in the 1920s? a. consumers demanded fewer goods.
b. consumers demanded more goods.
c. consumer demanded less expensive goods.
d. consumer demanded better-made goods.

The correct answer is alternative A) "Consumers demanded fewer goods."

The Great Depression took place in the 1920s, and it was one of worsts economical crisis the US has ever seen. During an economical crisis, it's normal for people to have less money, or at least spend it more wisely. Because of the decreased economical power of the population, the demand for goods also decreased, which further slowed the economy down.

Less demand, means less production is necessary, which means cut offs, which means unemployment, which means less money for the people. That's why decreased demand slows down the economy.

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."