In the 1830s the church studied how to address the expansion of the United States into the western frontiers.

The community played a major in the westward expansion of the United States.

Historians agree that Jackson played a critical role in the expansion of the United States.

It has been often suggested that this represented the two leaders looking westward towards the (then) future expansion of the United States.

The combined case became very popular during the western expansion of the United States in the 19th century.

The reservation system was created following the expansion of the United States into tribal lands.

The phrase "manifest destiny" is most often associated with the territorial expansion of the United States from 1812 to 1860.

These publications also encouraged the westward expansion of the United States.

It was built as a monument to the westward expansion of the United States.

Several families moved to the area as westward expansion of the United States was becoming more common.