What role did President Theodore Roosevelt have in ending the Russo-Japanese War? He sent the US Navy into Japanese ports.
He was a neutral party and played a key role in peace talks.
He stopped all Japanese immigration into the United States.
He played a key role in helping the Russians with peace talks.

Which options most accurately assess the impact of transportation improvements (e. g., railroads, canals, steamboats, transcontinental railroad) on the settlement of the west? ***(select all that apply.)*** a. they led to an increase in population density. b. they made it easier to travel long distances. c. they in establishing towns. d. they led to the development of the fur trade. e. they allowed for international travel.