What are 2 benefits and 2 disadvantages of the 4th roman expansion?

Advantages: Military expansion drove economic development, bringing enslaved people and loot back to Rome. Also, Rome gained more glory from surrounding nations.

Disadvantages: Rome no longer had enough food to provide for its people and was forced to import grain from other places. Poor farmers were forced to sell their land to wealthy landowners.

how did justinian contribute to the byzantine empire?

one famous byzantine emperor was justinian i. justinian ruled from ad 527 to 565. belisarius was the commander who led these armies in an attempt to win back the old western roman empire. the war effort to take back the western part of the empire forced justinian to raise taxes on the people of the byzantine empire.

explanation:

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by improved communication.