In this lesson, you learned that the roman republic was the first time a country used elected officials to represent the people’s needs and desires. now, you will conduct internet research to find two images that represent the key concepts or values of a republic, or both. after selecting the two images, you will write a paragraph addressing the following: a. explain why you selected each of the images. why did you think that each was a relevant representation? b. how did you evaluate the reliability of your selected sources? c. label each reference to the sources with proper citation: any direct quotations or references should be followed by the last name of the artist and the year of publication, in parentheses. example: (jones 2015). d. at the conclusion of your paragraph, properly cite both of your sources, following the guidelines of image citation. click here to access the image use and citation guide for reference ( picture posted below)

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."

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