The California Gold Rush of 1849-1855 radically transformed California, the United States and the world. ... The significant increase in population and infrastructure allowed California to qualify for statehood in 1850, only a few years after it was ceded by Mexico, and facilitated U.S. expansion to the American West.
Gilded Age and Jackson Era reformers shared many commonalities. They found for the rights of the common man, promoted democratic government. fought against monied interests, expanded access to the voting franchise, championed reforms in public life. One of the major differences between the two eras was that Gilded Age reformers were more concerned about conditions in the newly formed urban cities than in rural communities. Jacksonians promoted reformers n the new rural areas of the South and West in the 1830's. Gilded Age reformers represented the increasing importance of the city as the epicenter of American ethnic and industrial life as opposed to the agricultural ways of life that predominated in the Jacksonian period.
Detention is where they send people for being bad so they can "pay their time" and correctional facilities try to help people go back in the right direction
Your answer is OB; the height of a region in relation to sea level.