"Justinian Code" is the "Collections of Laws and Legal Interpretations" developed under the sponsorship of the Byranztine Emperor "Jutinian" [ That's why it named after him] from time A.D. 529 to A.D.565
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Answer:
Economic exploitation, social terror and political disenfranchisement were the push factors. The political push factors being Jim Crow, and in particular, disenfranchisement. Black people lost the ability to vote.
Non-violent civil disobedience