Answer:
A secondary source summarizes large amounts of evidence.
Explanation:
Primary sources correspond to “primary literature” and are those that present themselves and are disseminated exactly as they are produced by their authors. Primary sources are original materials on which other research is based. This type of source presents the information in its original form, without interpretation, summarization or evaluation by other writers.
On the other hand, secondary sources are interpretations and evaluations of primary sources for this reason present a series of evidences that support their interpretations. In this sense, secondary sources may be more useful than a primary source.
That would be choice C. the index fossils.
I hope this helps you! :)
Language (Spanish) and they forced brutal rule which also included a bit of slavery
\\After the fall of the Roman Empire, some of its cultural achievements remained which assisted other Empire to establish like the Eastern Roman Empire.
The Greek Language was spoken in Rome. The Greek language was very popular among the elite and educated people. The language was different from Roman which was part of the Latin language.
Julian Calendar was replaced with Georgian Calender. Julian calendar was an old calendar established by Julius Caesar to bring changes in the dating system in the calendar.