Through migrations quotas and legislation such as the Chinese exclusion act
Amusement parks were closed to people of color, motels would not accept guest that were of color
Merchants of death is a common moniker for arm dealer..
The way that the spoils system affect politics during the gilded age is : it helped a political party gained supporters, and breaking the stalemate between democrats and republican.
The assassination of Archduke Franz Ferdinand set off a chain of events among European alliances that led to war.