While the US secretary of state at the Federal level is primarily a diplomat to other nations analogous to the foreign minister in other countries, the Secretary of State at the state level is the state's chief elections officer, chief corporations officer, and supervisor of the State Archives.
According to Washington's secretary of state official website, the office was established with the adoption of the Washington State Constitution in 1889. It is an elected position. Election for the position of secretary of state holds every four years.
There is no real explanation for this but I will try to muster one up... Neoconsucianism was officially recognized during the early twentieth century which was during the song dynasty.