Answer:
The Progressive Era was a period of widespread social activism and political reform across the United States that spanned the 1890s to the 1920s. The main objectives of the Progressive movement were eliminating problems caused by industrialization, urbanization, immigration, and political corruption.
Periodization divides history into discrete, quantified named blocks of time in order to facilitate the study and analysis of history.
Answer:
To outline racial and ethnic groups, demographers depended on the U.S. decennial census and annual Current Population Surveys (CPS). To calculate marriage, fertility, and mortality rates, demographers use the national vital statistics records of births, marriages, and deaths. Estimates of internal migration come from the U.S. Bureau of the Census (USBC), and estimates of international migration come from the Immigration and Naturalization Services and USBC.
Explanation:
Population size is determined by three principal metrics of demography: mortality, fertility, and migration. Racial and ethnic differences in rates of one or more of these metrics cause the racial composition of the nation to change. Recently, international migration and higher fertility rates among some racial and ethnic groups have been the sole contributors to the nation’s population growth and changing composition.
Historical Trends
The racial and ethnic composition of the more than 265 million U.S. residents is 1 percent American Indian, 3 percent Asian, 11 percent Hispanic, 12 percent Black, and 73 percent White (Deardorff and Hollmann, 1997)—quite different than it was 50 years ago, and projected to be different 50 years from now.
Answer:
radio wave
Explanation:
Radio wave have photons with the lowest engeries. microwave have little more energy than radio wave .
The correct answer is crushed by taxes and debt, desperate peasants revolted
In the early years of the second century AD, the Han Dynasty declined. Peasant rebellions and rivalries in the Chinese court contributed to the fall. Even the public procurement system did not function properly and honestly: Chinese officials began to be chosen for public office because of their personal influence rather than their knowledge and intellect.
In the year 220 AD, the Han empire was fragmented into three kingdoms. Constant guerrillas have caused serious problems for China. This period of Chinese history is called the Age of Disunity, which lasted until 589 AD.
