What was the main problem for the Confederate and Union armies when preparing for war?

the use of email to replace slower surface mail.

1.the population change is near or at replacement level.

4. the birth and death rates are balanced.

6. sweden is most likely a developed country.

answer: (fluidity)is the correct answer.

explanation: because of this characteristic, success on the battlefield depends in large part on the ability to adapt to proactively change events to our advantage as well as to react quickly to constantly changing conditions

d. hip hop

it was originated in the 70s while the harlem renaissance occured in the 1920s