Which entrepreneur promoted the construction of the railroad more than any one else?

James Jerome Hill

Explanation:

James Jerome Hill was an American entrepreneur who promoted the construction of the Railroad without any help from the federal government. He became the builder of the Great Northern Railroad. In the 19th century, he was one of the railroad entrepreneurs to hold control over the Northern Pacific and the Chicago, Burlington and Quincy railroads. Hill helped to transform the Northwest of America by opening it to settlement, farming, and commercial development.  

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!

health and medicine because people are dying from not being healthy or not strong enough medicine