Final answer:
The ethnic composition of the U.S. population is projected to become more diverse, with a decline in the proportion of white Americans and an increase in the proportion of Hispanic Americans. Immigration and differing birth rates among races will be the primary drivers of these changes. Population growth in Africa and India, decline in Russia, and expected plateau in China will also impact the makeup of the U.S. population.
Step-by-step explanation:
The changes expected to take place in the composition of the U.S. population during 2000-2050 are primarily due to immigration and differing birth rates among races. The ethnic composition of the U.S. population is projected to become more diverse, with a decline in the proportion of white Americans and an increase in the proportion of Hispanic Americans. Furthermore, population booms in Africa and India, the decline of Russia, and the expected plateau of China will also contribute to changes in the makeup of the U.S. population.