I think that would be Voting, though I am not positively sure.
<span>The Byzantine Empire under Justinian wanted to promote continuity with the Western Roman Empire.
http://blahschoolstuff.blogspot.com/2017/05/100-module-pretest-world-history.html
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It increased the size of the United States because it was based on the idea that America was destined by God to expand from the Atlantic to the Pacific, in other words, it encouraged many to expand west.
hope this helps i actually just learned about this in class :)
It’s D, providing for a stable currency