The eastern uplift is most likely caused by the steady push of the Atlantic Tectonic plate against eastern North America, causing it to buckle up.
(The eastern uplift; is; most likely caused by the steady push of the Atlantic Tectonic plate against eastern North America) (The eastern uplift; caused; by the steady push of the Atlantic Tectonic plate against eastern North America)
The eastern uplift The eastern uplift
is caused
most likely caused by the steady push of the Atlantic Tectonic plate against eastern North America
by the steady push of the Atlantic Tectonic plate against eastern North America