What was one impact of the Land Run on Oklahoma’s demographics?

The growth of multiethnic communities was a significant impact of the Land Run on Oklahoma’s demographics. The Land Run of 1889 opened up previously restricted lands in the Oklahoma Territory to settlers, attracting a diverse group of people from various backgrounds, including Anglo-Americans, African Americans, and immigrants from different ethnic groups. As these various groups settled in the region, they created vibrant, multiethnic communities that contributed to the cultural fabric of the area. This diversity laid the groundwork for a rich tapestry of cultural exchange and interaction, shaping Oklahoma's identity in the years to come.

In contrast, the other choices do not accurately reflect the demographic changes resulting from the Land Run. For instance, the increase in Native American populations did not occur as many Native Americans were either displaced or restricted from these new lands. Similarly, the idea of a reduction in population density does not align with the reality of an influx of settlers, which actually increased population density. Lastly, the relocation of urban populations does not pertain directly to the effects of the Land Run, as the primary movement was of rural settlers seeking land rather than those migrating from established urban areas.