Answer:
In 1890, population density was greater east of the Mississippi River.
Step-by-step explanation:
In 1890, the westward expansion was only about 50 years old. California, Texas, and other states that today are large population centers were at that time small communities that did not tip the population balance. In contrast, east of the Mississippi, the original Thirteen Colonies that formed the United States were overcrowded, with large cities such as New York, Boston and Philadelphia.