I think that the answer is C, becasue the Internet is a definite no. I don't know much about Dustball software. And D would not include much of someone else's work.
Answer:
Colonizing Nations
The Spanish and Portuguese people were the first to colonize many parts of South America and Central America in the 16th century. They also won many parts of North America.
Explanation:
also sub to Stariceie E on yt
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".
Hannibal's losses in the Second Punic War effectively put an end to Carthage's empire in the western Mediterranean, leaving Rome in control of Spain and allowing Carthage to retain only its territory in North Africa. Carthage was also forced to give up its fleet and pay a large indemnity to Rome in silver.
Sorry if this doesn't work...
I believe the common themes would be courage and patirotism.
All of the stories above depict the sacrifice that characters made for the glory of their own country.
In number the stars for example, it revolves around the life of the characters in denmark during the invasion period by Germany.