Maybe there were no cures, vaccines, or antibodies at the time. Medicine was never completely discovered for centuries to come, which is why the Black Plague occurred during the medieval/Middle Ages.
<span>People mass produce goods using advanced technology during the modern era that did not exist during the classical era.</span>
The answer is French and great Britain
<span>The concepts of federalism and separation of powers are distinct but related principles of political organization that are deeply imbedded in American governmental theory and experience. They are often confused. This confusion arises because both concepts involve separating or dividing governmental powers among distinct political organs in order to make government responsive to people's needs and to keep government from becoming tyrannical. </span>