An ocean surrounded by many trenches may "decrease in size."
This is evident in the formation and process of subduction and sea-floor spreading, which has a great impact on how the oceans form in terms of size and shape.
According to research, it is believed that the sizes of Earths oceans are defined by the speed at which new crust is being developed, right from the mid-ocean ridges, and the speed at which old crust is being swept off at deep-ocean trenches
U.S. victory in the war produced a peace treaty that compelled the Spanish to relinquish claims on Cuba, and to cede sovereignty over Guam, Puerto Rico, and the Philippines to the United States.
