Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Rideau Canal' has mentioned 'United States' in the following places:
Occurrence Sentence Text Source
The canal was opened in 1832 as a precaution in case of war with the United States.
After the War of 1812, information was received about the United States' plans to invade the British colony of Upper Canada from upstate New York by following the St. Lawrence River.
Since the canal was completed, no further military engagements have taken place between Canada and the United States.
The Rideau Canal is a large strategic canal constructed for military purposes which played a crucial contributory role in allowing British forces to defend the colony of Canada against the United States of America, leading to the development of two distinct political and cultural entities in the north of the American continent, which can be seen as a significant stage in human history.