Russia has the most but there’s also iran, qatar, turkmenistan, usa, saudi arabia, united arab emirates, venezuela, nigeria, and algeria
It's because underneath the pacific rim is tectonic plates that move causing earthquakes, active volcanoes, or both.
N a market economy, consumers decide the answers to the three questions. They do this by their choices of what to buy. No one tells companies what to make -- they make whatever they think will sell. If they choose wrong, they go out of business.