Answer:
The state that has not benefited from modern America's demographic shifts in its population, economy, and political power is Ohio.
Step-by-step explanation:
Ohio is a midwestern state of the United States, that is, it is a state that is not located at the epicenter of current migration flows (South and West of the United States, plus New York City).
Due to this situation and the decline in the last years of the industry, which constitutes the main engine of the state, the population is practically stagnant. In fact, from 1960 until today, its population has only increased by 1,000,000 people (less than 10%, from 10,600,000 to 11,600,000 inhabitants), while in the country as a whole the population increased from 179,300,000 to 320,000,000 inhabitants.