To combat the threat of tropical diseases such as malaria and yellow fever, the United States decided to use new measures to eradicate the disease before the construction of the Panama Canal. Under the leadership of Colonel William Crawford Gorgas, many changes were made. When it was discovered that mosquitoes were the source of the disease, Gorgas who was appointed as the head of hospital and sanitation, he made sure that containers with stagnant water were removed because mosquitoes lay their eggs there. He also built domestic water systems to eliminate the need to collect rain water. Prophylactic Quinine was supplied to the people in the area and fumigation and oiling of streams were launched. Those who were sick were quarantined and workers would sleep in screened structures so that mosquitoes would not be able to bite them. These programs resulted in the successful elimination of tropical diseases in the area and the health of workers improved.
Answer:
nations with different tribes
Explanation:
The reason why the 2nd one is correct is because of apartheid. if you dont know what apartheid is then it's a policy that separated the nations as tribes. so as a result every nation is separate from one another as different tribes in apartheid.
Hope this helps ya ;)
Answer:
It's an command especially a formal order from a superior court.
The M-A-I-N acronym is often used to analyse the war – militarism, alliances, imperialism and nationalism.
Answer:
That country is the Dominican Republic.
Explanation:
Under pressure from Washington, the Dominican Republic´s government asked the United States to intervene in the country to restore order in finances in 1905. In an executive order, the US issued a guarantee that it would respect Dominican territorial integrity and that it would assume custom house collection, using 55% of receipts to pay outstanding obligations.
The year before, president Ted Roosevelt had formulated the policy later known as the Roosevelt Corollary to the Monroe Doctrine. It said that the US would not allow European powers to collect debts from Latin American and Caribbean nations by force.
