Well in this period, it is considered the old stone age and for good reason, as this era is characterized by the use of rudimentary chipped stone tools. Basically it was the era when human started using tools that were made from stone. Or in other words, innovated.
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C. they were prepared for a possible nuclear war
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In the 19th-century United States, racism was rampant. Chinese immigrants were openly mocked, often in unfavorable newspaper caricatures. Germans were stereotyped as loitering in beer halls. African-Americans were portrayed in demeaning advertisements. And Irish people — who were not considered "white" by the existing majority at the time — were mistreated, too.
More than 1.5 million people left Ireland for the United States between 1845 and 1855, the survivors of a potato famine that had wiped out more than 1 million people in their homeland. They arrived poor, hungry and sick, and then crowded into cramped tenements in Boston, New York and other Northeastern cities to start anew under difficult conditions.
The struggles of Irish immigrants were compounded by the poor treatment they received from the white, primarily Anglo-Saxon and Protestant establishment. America's existing unskilled workers worried they would be replaced by immigrants willing to work for less than the going rate. And business owners worried that Irish immigrants and African-Americans would band together to demand increased wages.
<span>Trigonometry (from Greek trigōnon, "triangle" and metron, "measure") is a branch of mathematics that studies relationships involving lengths and angles of triangles. The field emerged in the Hellenistic world during the 3rd century BC from applications of geometry to astronomical studies
Hope this helps!</span>
Pakistan played their first ODI match against New Zealand.
