Conversation so far:
what was a reform that was made related to umar?
While under his leadership, the empire expanded and he also began to build a political structure that would hold together the vast empire.
were there any other reforms?
together the vast empire.
He undertook many administrative reforms and closely oversaw public policy.

Question: what other reforms did he make?
Self-contained rewrite: what other reforms did Umar make besides the administrative reforms and close oversight of public policy?