Next, research the US population in 2015 on the Internet. Note the total population of the United States, and analyze the population pyramid’s shape. In a short essay, analyze the changes that have taken place to the US population between 1950 and 2015. Based on your knowledge of US history, why do you think the US population changed as it did in that span of time? What effects do you think these changes have had on the physical environment of the United States? What do you think will occur between 2015 and 2070? i will give you the max amount of points if it gets answered soon <3

=> The demographic future for the U.S. and the world looks very different than the recent past in key respects. Growth from 1950 to 2010 was rapid—the global population nearly tripled, and the U.S. population doubled. However, population growth from 2010 to 2050 is projected to be significantly slower and is expected to tilt strongly to the oldest age groups, both globally and in the U.S.

=> Aging is not exactly news—the U.S. and global populations also turned older from 1950 to 2010. But future prospects for aging have garnered more attention because, unlike in the past, younger populations, those of children and those of middle-age adults, are at near standstill. Thus, the social and economic effects of aging are likely to be felt more acutely in the future.

Explanation:

c. had saved colonel cresap's family from attack by other native americans.