A caldera viscous or acidic lava plugs the vent of a volcano this leads to violent eruptions this causes the crater to be blown off the top of the volcano subsides or collapes forming a basin shaped depression.called a caldera .hope this helps
The deposital feature is a <span>Tombolo.</span>
They had a large of mineral resources.
Common Citizenship.
Participatory Citizenship.
Represented Citizenship.
Private and Public Citizenship.
Global Corporate Citizenship.
Hope I Helped :) <span />
A hopes this helps good luck