Answer:
The Soviet Union began to secretly install missiles in Cuba to launch attacks on U.S. cities
Explanation:
Sources are used in a paper to show what ideas inspired you and whose theories you would be using and you cite the sources in order to avoid plagiarism. If you don't have sources, your paper will not be valid and you could get accused of plagiarism. The more sources you use the better but you should keep in mind that they need to be important for the paper and used with a purpose and not just to increase the number of sources.
Answer:
The Renaissance also encouraged people to question received wisdom and offered the possibility of change, which was unthinkable in the middle ages. This encouraged the reformers to tackle abuses in the Church, which ultimately led to the schism and the end of Christendom's old idea.
Answer:
option 2: material created after the period of time in an event occurred
Explanation:
first we need to know what primary source is
a primary source may be someone or something with a direct knowledge of the event or situation.this is the most reliable sourceof information about an event or situation obtained directely from the event
secondary source is obtained from the primary source hence being obtained after the period of time an event occured.it is information derived from the primary source
