After the persian war, what did sparta, athens, and other greek communities collect to ward off future external attacks?

Ahistorian is writing a book about british prime minister winston churchill. she claims that churchill was one of the earliest british leaders to realize that nazi germany was a serious threat to british security what is the best way to determine whether the historian's interpretation is valid? o a. review primary sources to see if churchill ever recorded his opinions of nazi germany. o b. find out whether the historian has written any other books about british leaders. c. analyze secondary sources summarizing the effects of nazi germany on great britain. o d. cite the historian's book in another study about important 20th- century world leaders.

In 1912, the imperial system that had ruled over china for thousands of years

When was wheeled traffic permitted in early rome? daytime nighttime all day never