The powers of the national government are limited
Because it offers the historian an objective snapshot of the public sentiment of the time, which the cartoonist (should be) distilling for their readers, according to their feelings, for mass appeal. I say objective as it is usually very easy to decipher their subjective viewpoint according to the publication. The value of this is that it is tapping into how the masses 'feel' rather than how subjective facts can be built to form historical opinion. It becomes especially valuable prior to this century, when public sentiment is harder to garner as we were less technologically advanced.
Answer:
Fearing that his small group of men could not withstand an assault, Travis wrote a letter seeking reinforcements and supplies from supporters. The letter closes with Travis's vow of "Victory or Death!".
To protect them from being recognized.
"b. an efficient and professional civil service administered the empire" was not a strength which enabled the Byzantine Empire to last for over 1,000 years since no service existed.
