What methods were used to expand the United States?

The american civil war most former enslaved african americans in texas began making a living as

The articles of confederation allowed congress to: make and borrow money. declare war. create a postal service. all of these choices are correct.

Which statement about submarine use in world war i is true? the allies never found a way to counter german submarine warfare. germany’s use of submarines affected the united states’ decision to enter the war. only the germans used submarines in world war i.