They wanted more political and economical power. During the 18th and 19th centuries in Spanish America, Creoles would lead the fight for Latin American Independence due to the fear of social unrest
The amendment becomes part of the Constitution when it has been ratified by three-fourths (currently 38) of the states. This process has been used for ratification of every amendment to the Constitution thus far. Article V also provides for an alternative process, which has never been utilized.
A primary source would be an eye witness account of the event. Someone who seen it happen.
B. Morse created the telegraph in the United States in 1837.