Final answer:
Hispanics are the fastest growing ethnic group in the United States, having the largest minority population with high birth rates and a strong community presence. Asian Americans are also a rapidly growing group, often referred to as the "model minority," particularly noted in California where their numbers have significantly increased.
Step-by-step explanation:
The fastest growing ethnic group in the United States is Hispanics. This demographic has not only become the largest minority group in the country but it also has one of the highest birth rates among ethnic groups. Factors contributing to their rapid growth include a relatively young population, high birth rates, and ongoing immigration. Latinos have been integral to demographic shifts in the U.S., particularly due to their significant numbers and the role of the Spanish-language media in keeping the community informed and connected.
When considering the concept of a "model minority," it is Asian Americans who are often referred to by this term. This group has seen significant growth as well, notably in states such as California where their population increased by 31.5 percent since 2000. While Hispanic growth has been prominent across the nation, the Asian American community is expanding rapidly in specific regions and is playing an increasing role in the socio-economic tapestry of the United States.