Occurrence of Attributes in Original Text
The text related to the cultural heritage 'Monarch Butterfly Biosphere Reserve' has mentioned 'United States' in the following places:
| Occurrence Sentence | Text Source |
|---|---|
| [3] The survival of the species depends on a large number of habitats from Canada, the United States and Mexico during its annual migration cycle. | WIKI |
| High unemployment, especially for youth, also provokes migration into other parts of Mexico and to the United States or Canada. | WIKI |
| [16] Butterfly counts coming in from the United States and Canada in recent years were relatively stable in the 2000s, with a dozen confirmed colonies as of the 2007-2008 winter. | WIKI |
| [15] These reserves are visited by thousands of Mexican and international tourists, principally from the United States, Canada, Spain, France, Germany and Japan. | WIKI |