How did the Spanish-American War contribute to the advancement of scientific understanding of
tropical diseases?

The American declaration of war was predated to 21 April to legitimize certain ... The small army would conduct raids against Cuba and help sustain the ... fearful of tropical diseases and desirous of thwarting Spanish reinforcements on ... Three defensive lines were created west of the city to deal with the American advance.

Explanation:

answer: the answer is b

explanation: i just took this quiz last week

alliances in ww1 were different from ww2 because the entente in ww1 made up of serbia,russia,france,britan,japan and italy later america  and all allied in a sort of balance of power and too keep germany,austria-hungary,and the ottomans down. russia allied the serbians in order to exert its influence in the balkans while france allied the russians because france was still in dismay and insulted after the defeat to the germans during the unification of germany and britian allied the belgians after the germans invasion of belgium.in ww2 the alliances were in a preemptive attempt to deter any further wars into happening while germany and italy allied since they were insulted and humiliated after the previous war while also sharing a similar ideology of facsim along with japan which all 3 had a want for world domination and agreed to assist one another in the endevours 

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