Answer:C
Soviet Union and USA were going back and fourth creating new inventions and always trying to one up eachother
The answer is the first one
I would go with True because any historian needs a lot of patience to get what they want or to learn about something etc..
The main point of this excerpt is that African-Americans were not considered US citizens.
In the Supreme Court case Dred Scott vs. Sandford, Scott is suing for his freedom from slavery. This is because his master brought him to the Wisconsin territory, a territory where slavery was outlawed.
However, the Supreme Court ruled against him. The reason why they ruled against him is based on the excerpt above. The Declaration of Independence did not make it blatantly clear that slaves were considered citizens. Since they were not considered citizens, they had no legal rights that slave owners had to respect.
Trade flourished because these progressing empires were developing new ways to produce products and utilize agriculture in their areas, such as Han with silk and Rome with olives and fishing/seafaring. These empires has never had access to goods that were from other areas before the Silk road, causing trade to become immensely popular and relied upon.