Last one because everyone started building navies, so everyone else started building navies in order to defend against other navies.
Answer:
Claudius embarked on many public works throughout his reign, both in the capital and in the provinces. He built two aqueducts, the Aqua Claudia, begun by Caligula, and the Aqua Anio Novus. These entered the city in 52 and met at the Porta Maggiore. He also restored a third, the Aqua Virgo.
The answer to this would be B- Longitudinal Study.
Rousseau argued against inequality with the classes, but on the other hand, Voltaire argued for freedom of speech and religion.
After Rhee's Chinese volunteers entered the Korean conflict, the South Koreans were again pushed below the 38th parallel. The statement that is being presented is FALSE. Rhee's Chinese volunteers didn't enter the Korean conflict but rather they entered into another entry.