japan's 1980's bull market was so good that, in 1989, japan was expected to overtake the united states as the world's richest economy
where people expect financial investments to rapidly increase, like in the economic boom of the eighties
"japan's 1980's bull market was so good that, in 1989, japan was expected to overtake the united states as the world's richest economy" What is the definition of "bull market"?