What is the most densely populated region in the U. S.? the area between Seattle and Portland

the area around Minneapolis

the area between Washington, D. C., and Boston

the area around Las Vegas

Looking at the key and then looking at the map, I'd say the area between Washington DC and Boston.

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:

mark brainliest and have a great day!