Please use your great knowledge to help me conquer this question thank you What materials did the Inca use to build suspension bridges in the Andes?

They wove wool and cotton to make rope bridges.
They cut trees from the Amazon to build wood bridges.
They dug rocks out of the mountains to build stone bridges.
They brought sand and cement from the desert to make brick bridges.

1. in the debate for the student council election, a student candidate quoted explicit lyrics from a popular song. the school suspended him for two days, in line with school policy. 2. a student sued the school over its policy of holding two proms: one for african american students and one for white students. - are these civil or criminal cases? how do you know? - which court has original jurisdiction in the case: state court, federal court, or the u.s. supreme court? -. where will the case go next if it is appealed?