According to the UN, they have 193 members. And acccording to the U.S. government, the only two states that have not joined are Vatican city (Holy See, which most likely would like to remain neutral on global political issues) and the Palestinian Authority, which is recognized by some members, but not sufficiently to deem it a proper state entity.
If Oliver would like to make the most money out of his savings account, he should check it daily.
Ultimately, Reconstruction ended because of several factors. Northerners were tired of a decade of Reconstruction efforts and had become less interested in the South with the rise of speculation and profit-making in the Gilded Age and then the hardships of the Depression of 1873. In addition, the conservative Supreme Court repeatedly struck down Radical Republican legislation, issuing rulings that had a devastating effect on blacks’ civil liberties. Meanwhile, the persistent scare tactics of the Ku Klux Klan and other southern white groups drove many Republicans out of office, giving Democrats a majority in every southern state by 1877. Finally, the Compromise Of 1877 and removal of the remaining federal troops from the South signaled the end of the Reconstruction era.