Answer:
the rebuilding of constantinople
Explanation:
The action of Justinian which contributed to the decline of the Byzantine empire is the rebuilding of constantinople. Justinian was the Byzantine emperor who ruled from 527 - 565, his principal goal was to restore the original Roman Empire
The Trail of Tears is the name of the forced Indian migration from areas east of the Mississippi River to areas in Oklahoma. This was part of Andrew Jackson's Indian Removal Policy.
B is the answer to your question
They feared more mistreatment
