John Hay and John Nicolay, both from Pittsfield became personal secretaries to Lincoln when he became President of the United States. Many Civil War era homes still exist in Pike County. In fact, there are more houses and sites associated with Lincoln in Pittsfield, Illinois than in any other place in the country.
Cottonee does not need to reach any particular level to evolve. You can use a Sun Stone on it and it will evolve into Whimsicott! Happy playing :)
Evolving Pokemon will randomly change your Pokemon's moves, so you don't want to power up a Pokemon and then see it get weak moves when it evolves. One other important note: Eevee's evolutions are totally random. Eevee will evolve into either a Jolteon, a Vaporeon or a Flareon, but you don't get to pick how it evolves.