How could people in the 14th century have best prevented the spread of plague
By avoiding travel
By practicing basic hygiene and sanitation
By using folk remedies
By seeing doctors more often

By practicing basic hygiene and sanitation

Explanation:

in the 1347 - 1350 outbreak, doctors were completely unable to prevent or cure the plague. ... Some of the cures they tried included: Rubbing onions, herbs or a chopped up snake (if available) on the boils or cutting up a pigeon and rubbing it over an infected body.

affirmative action refers to the policies that take gender, race, or ethnicity into account in order to promote equal opportunity.

employers subject to title vii are prohibited from taking race or sex into account in any employment decisions. aa is a penalty for having any job group substantially statistically "underutilized" in any race or either sex. the employer must take steps to eliminate the underutilization, then stop, ending its aa efforts

confedracy

supported slavery

upheld the supremacy of federal laws

believed states should be able to nullify federal laws

union

wanted to abolish slavery

supported high tariffs

upheld the supremacy of federal laws