In the western part of North America two nations claimed the same land in many places the nations overlapping claims were?

Answer 1

In the western part of North America, the two primary nations with overlapping land claims were the United States and Mexico. This conflict was particularly evident in areas such as Texas and California, where both nations asserted sovereignty at different points in history. The tensions culminated in the Mexican-American War (1846-1848), resulting in the U.S. acquiring significant territories through the Treaty of Guadalupe Hidalgo. This treaty formalized the border between the two nations, but disputes over land and sovereignty persisted for years.