Respuesta :
The 1890 census announced that the frontier region of the United States no longer existed, and that theCensus Bureau would no longer track the westward migration of the U.S. population. Up to and including the 1880 census, the country had a frontier of settlement.
Answer: The correct answer is : Through the census conducted in 1890 it was announced that the border region of the United States no longer existed and that the census office would no longer seek migration of the population to the western United States, until this year The United States had a settlement border.