100th meridian west, a line of longitude west of the Greenwich Meridian
•
100th meridian east, a line of longitude east of the Greenwich Meridian
Meridian | 100th United States Congress | Meridian, Mississippi | meridian | ITV Meridian | 97th meridian west | Blood Meridian | 144th meridian east | 114th meridian west | Meridian (geography) | 57th meridian west | 125th meridian west | 105th meridian west | 104th meridian west | 6th meridian east | 153rd meridian east | 115th meridian west | 105th meridian east | 103rd meridian west | 100th Grey Cup | Meridian, Texas | Meridian (journal) | Meridian International Center | Blood Meridian (band) | 87th meridian west | 86th meridian west | 80th meridian west | 58th meridian west | 32nd meridian west from Washington | 30th meridian west |
While the previous Act created the legal definition of wilderness in the United States, the Eastern Wilderness Areas Act only applied to land east of the 100th meridian.