Why and how did japan become an imperial power during the late 19th century and early 20th century

because russia invaded them and tried to take over and turn them into communist government

its many islands, high mountains, and remote peninsulas isolated population centers.

the right answer is the third one: turnpikes went short distances to connect markets. turnpikes, also known as toll roads, were very important for trade and transportation (of people, goods and products) in the 19th century, coinciding with the expansion towards the west. they contributed significantly to the economic development of the united states.