How is the land bridge related to geography

How would having more railroad tracks be advantageous during a war

Why do you think that historians use the word “revolution” to describe important changes in agriculture? how did the green revolution and other agricultural revolutions change the lives of billions of people? < < read less

Why did the south think that its secession from the union would succeed? a. the confederate army was larger than the union army. b. european nations had promised to support the south. c. the south only had to defend itself against the north, not defeat it.