Why did the spread of disease matter?

The economic costs of infectious diseases—especially HIV/AIDS and malaria—are significant. Their increasing toll on productivity owing to deaths and chronic debilitating illnesses, reduced profitability and decreased foreign investment, has had a serious effect on the economic growth of some poor countries

Explanation:

(e) a major consequence of the election was that several southern states

basic principles: federalism, separation of powers, checks and balances, judicial review, representative democracy, limited government, rule of law, individual rights and responsibilities, consent of the governed, majority rule, popular sovereignty, equal protection.