Which reform measure could voters use if they wanted to change a law about taxes?

The reform measure that voters could use if they wanted to change a law about taxes would be "initiative measures".

An Initiative is the process that enables citizens to place proposed statues and reforms on the voting ballots. In simple words, It's used to change or alter laws that are already in place.

cultural/diplomatic relations. most medieval japanese   culture has chinese origins. writing, architecture etc.

determination