The answer to your question is two
The correct answer is D. Byzantine empire.
Western roman empire was termed as the western provinces which founded in the Roman empire. They had coequal courts which divided the governance between the Eastern and Western provinces whereby in those separate courts they had imperial succession.
Both Eastern and Western Roman empires they had a description which was modern which described each political entities.
The two separated empires, Romans did not value them as separated but as a single polity which was governed by imperial courts which were separate in expediency of administrative.
The borders.
It was based and developed on the idea that the cotton producing and other "Goods States" had more value with slaves. Abolishing slavery would in turn take its toll on the states.
Disabled
Because the President is not able to fulfill his duty, so the Vice President must take over. The Vice President takes over the “powers and duties” of the presidency in the event of the president’s removal, death, resignation, or inability