Pacal the Great (Kinich Janaab Pacal) was the Maya King of the city of Palenque in Mexico. Pacal the Great's most important accomplishments was that he brought the city of Palenque from obscurity to a great power.
The 3/5ths compromise was the law that designated how slaves were to be treated and represented. Previously an African American was counted as only 3/5ths of a person, hence the name of the compromise.
To encourage an ethnically diverse population, Germany wanted control on who should be who.