One reason why it is useful for historians to base certain studies on the analysis of historical periods is because "c. similar events and trend often take place on different places during the same periods," since this can take place due to "cultural diffusion".
The answer is A. Rising Inflation
Answer:
The dome, considered the Romans' greatest architectural achievement, is the largest unreinforced concrete dome ever built. Hadrian's temple was dedicated to the classical gods – hence the name Pantheon, a derivation of the Greek words pan (all) and theos (god) – but in AD 608 it was consecrated as a Christian church.