What was the outcome of the Anglo-American Convention?

The Anglo-American Convention, signed in 1818, primarily addressed the issue of the Oregon Territory by establishing a joint occupation agreement between the United States and Great Britain. This arrangement allowed both nations to share control and access to the land west of the Rocky Mountains, which was increasingly important due to the expansionist desires of American settlers and explorers during that period.

The significance of this convention lay in its diplomatic compromise, as it temporarily eased tensions between the two countries over territorial claims and facilitated settlement and exploration in the region. The agreement lasted until the mid-19th century, highlighting the era's growing interest in westward expansion and the complexities of international relations in North America.

In contrast, the other options focus on different aspects of U.S. history and foreign relations. While land boundaries with Spain and trade disputes with Britain were crucial topics during that era, they were not direct outcomes of the Anglo-American Convention. The creation of new state borders is also not connected to this specific agreement, as the convention focused solely on the Oregon territory rather than defining borders for existing or future states.