<span> The ramifications of the assassination led to the </span>Liberators' civil war<span> and, ultimately, to the </span>Principate<span> period of the </span>Roman Empire<span>.
Hope this helps. :)</span>
Answer:
A
Explanation:
The subject of the sentence is 'The slaughter' with 'of animals' providing more detail which is why the verb is singular.
