<span>b. the assassination of archduke francis ferdinand.
</span>
I believe the answer is A but i could be wrong, during the Civil war it made it easier for them to speak and talk to each other during that time sending goods and messages across the united states.
Hope this helps.
i think its false... im sorry if im wrong
Americans were opposed to a national government because they thought that a stronger government threatened the sovereignty and prestige of the states, localities, or individuals.