I would say the answer is perfidy. The definition of perfidy is, deliberate breach of faith or trust; faithlessness; treachery.
Till the earth and heaven ring means that the author wants liberty to be sung in every ear.
Let us march on till victory is won means that he won't stop protesting until everyone has liberty.
High as the listning skies means that their protest will only get higher until they get what they want.
Answer:
A is the answer thank me laater
B. It suggests that there is something flawed about the colonized people and their culture
