A pre existing condition is a medical condition<span> that started before a person's health insurance went into effect or was payed for. </span>
Explanation:
polio vaccine was discovered by jonas saulk, 1953. order of events he had to follow / Saulk introduced the 1st vaccine with dead polio virus injected in humans, in 1953. 1st 2 introduce dead virus into humans, proved to be a substantial tool for vaccination of children and adults. proven to work, we use this vaccine today...
<span>the presence of a strong theme, i beleive......hope this helps :)</span>
Answer:
brought them closer together.
Explanation:
Personification gives human characteristics to objects/things.