A historian would first look at the reliability of a source - when it was published and what was happening at the time (context), who wrote it and their qualifications, any bias the author may hold, whether author sources corroborate the source, whether the author has used references, whether the source provides evidence, who the source is representative of and whether the source provides a balanced perspective
Answer:
1. Vietnam is divided into two countries
2. The Viet Cong start a resistance against Ngo Dinh
3. President Johnson escalates US involvement in the war
4. Vietnam is unified under a communist government
Explanation:
First 5 in order Delaware, Pennsylvania, New Jersey, Georgia, and Connecticut.
last 5 in order New Hampshire, Virginia, New York, North Carolina, and Rhode Island.