Which ocean rim is called the "ring of fire" because of the several volcanoes and other tectonic activities present there?
atlantic ocean
pacific ocean
indian ocean
arctic ocean
antarctic ocean
nextreset

I think it's the Pacific Ocean.

Because the volcanoes included in the ring of fire include those in Japan and the Philipines as well as those in the Western United States and Mexico. The only connector is the Pacific Ocean.

Round it to the nearest tenth

It is the doctrine that the us had the right and duty to expand throughout north america. it just means they believed they had the right to expand westward and they did! they stated with the 13 colonies and then they kept moving gaining different territories throughout the years