Linked from
The 11 pages that link to Juan de Fuca Plate, each with the reason it gives.
Cascadia subduction zoneRelated: Its motion drives convergence across the Cascadia boundary.
Mount St. HelensRelated: Its descent contributes to the melting that feeds Cascade volcanism.
Mount RainierRelated: Its descent helps generate the magma beneath Rainier.
Juan de Fuca RidgeRelated: The ridge forms its western boundary and generates its oceanic crust.
Mount HoodRelated: Its descent beneath North America drives volcanism beneath Mount Hood.