1830 was the year when anti slavery movement first started, The abolitionist movement began as a more organized, radical and immediate effort to end slavery than earlier campaigns. It officially emerged around 1830. Historians believe ideas set forth during the religious movement known as the Second Great Awakening inspired abolitionists to rise up against slavery.
Historians would study magazine, research paper, survey reports in order to understand the gap in the bridge.
Explanation:
Historian and archaeologist study the past and the contemporary issues also. For that they culture historical documents, evidences and reports, memoirs etc. Past is the key of the present. There is always an interconnection in between past and present situation.
To understand the gap in the bridge magazines, primary survey reports, research article, gazetteers help a lot. Empirical research means practical visit to a place or experiment of gathered information for its validity expedition is also done by the historians.
Power would have been passed to the Vice President.
According to the Presidential Succession Act, if a President dies in office, then the Vice President takes the oath of office.