Which type of music made use of unusual yet basic scales called church modes?

Gregorian chant made use of unusual yet basic scales called church modes.

Gregorian chant, monophonic, or unison, liturgical, sacred music of the Roman Catholic Church, used to accompany the text of the mass and the canonical hours. Gregorian chant developed mainly in western and central Europe during the 9th and 10th centuries. Gregorian chants were organized initially into four, then eight, and finally 12 modes.

regarding the law, the 15th amendment was specifically designed thinking in the rights of black free men.

even though ratified on february 3, 1870, the promise of the 15th amendment would not be fully applied for a long time.poll taxes and literacy tests would allow southern states disenfranchise african americans. only in 1965 the voting rights for african americans would be actually able to vote in the south.

in 1965, president johnson signed the voting rights act, which aimed to overcome legal barriers that prevented african americans from voting as it was guaranteed by the 15th amendment to the u.s. constitution.

back in the area of iowa even though you were found in florida there is a system that they dont want to tell you about where they can go fish for you in other states and bring you back to be tried in front of the crime scene so your location

plz mark brainliest i would appreciate it btw i live in michigan too xd