It is trial how it helps !
One of the main reasons why primary sources are valuable to historians is because "<span>They give insight into the thoughts and feelings of a participant in history," since these are sources that originated during the time in question, and are "unaltered". </span>
Well..as far as i learned from my knowledge the answer would be in the past, the military and the FBI have prevented a number of terrorist attacks.
Secondly, wasn't there suppose to be an option answers for your question ?
It should be Either D or C
Answer:
presidential signature - A proposed law passed by Congress must be presented to the president, who then has 10 days to approve or disapprove it. The president signs bills he supports, making them law. He vetoes a bill by returning it to the house in which it began, usually with a written message.
Explanation:
The question is worded weirdly but I hope this helped :)
