I. improving the road system
ii. increasing sea trade with india and south east asia.
iii. extending the canal system
iv. brutal warfare and ruthless killing of people in order to take over china.
a.
i & iii
c.
iv only
b.
ii only
d.
all of the above

d is the answer. leo should include the source.

attacks by the seljuk. a devastating blow to the entire byzantine world was dealt by christian crusaders from the west. the venetians were eager to destroy byzantine power and offered the crusaders money, ships, and part of the spoils of war.

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he government should regulate the economy