<span>A Venn diagram is a useful tool when comparing and contrasting. </span>
Gettysburg. That's the answer.
<span>B)Lyndon Baines Johnson was sworn in as the President of the United States. </span>
Answer:
A primary source is something written at the time of an event. An example would be a diary, journal, letter, etc. A secondary source is usually written after the event and uses primary sources to give an idea of what happened at that event. An example would be a history textbook, y0utube video, etc.
Explanation:
