Why did most German immigrants not experience the same kind of discrimination from Americans that Irish and Italian immigrants did? They did not try to spread Catholicism like the Irish and Italian immigrants did.
They moved west to farm and did not threaten the jobs available to native-born Americans.
They only stayed long enough to save as much money as possible before returning to their homeland.
They were willing to work the most dangerous jobs for lower wages than American laborers.

The United States, as an immigrant nation, has always faced the challenge of incorporating new demographic groups into its society and culture. Throughout the history of the United States, this has resulted in fierce national debates over what it means to be an American. Successive waves of immigration diversified the country from its origins in white, Anglo-Saxon Protestantism, while enlarging and expanding upon the definition of the term American.^1

1

it was the "4. potsdam" conference that demanded the unconditional surrender of japan, since it was clear that the japanese would continue to find until the very last man otherwise.

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."