No. It's still quite healthy.
US, USSR collapsed.
He realized the science experiment had gone horribly wrong when the school collapsed.
The soviet union government collapsed
nothing because the USSR collapsed in 1991
The fixed-exchange-rate system collapsed.
I think you may mean caldera (note spelling) which is an area of land which has collapsed downwards following a volcanic eruption.
because there are all about things around us and in us
Science gave us knowledge about how the universe works.
The synonym for collapsed is "fallen" or "crumbled."
yes its because science help us
The Soviets collapsed. The US continues to prosper, at least in comparison.
it would send us in to a Even bigger economical breakdown