They could somewhat relate to what the slaves were going through. they face similar oppression, discrimination, segregation, and overall prejudice that slaves went through. They had little to no rights, couldn't vote, couldnt do much without the authority of a white male, they werent allowed in war or politics. basically they could relate
The citadel is important, because it has a great archaeological value and a variety of ecosystems. Machu Picchu symbolizes the excellent technical skill, and productivity of the Inca Empire in its apogee.