I think the answer is B... but I’m not sure.
Architecture and seafaring are the two answers
The element that Rosh Hashanah and Yom Kippur share is : They both are considered high holy days
Rosh Hashanah is the Jewish new year , while the Yom Kippur is known as the Day of the atonement for the Jewish
hope this helps
C. first battle in which American Indians fought outside of the Indian Territory