A lot of them were fleeing with family. They were helping others escape that were slaves. They were being forced out, at times, because even though they weren't slaves, they were mistreated. They claim that slavery, at the time, was to protect African Americans. They fed them, housed them, etc. So supposedly it was because they were no longer safe. Also, back then, you could become a slave, unless you had your papers. So some feared becoming slaves.
Answer:
Correct answer is A. An attack against one member would be considered an attack against all the members.
Explanation:
A is correct answer as it is the only article that has been mentioned here. All other options are not related to the NATO treaty. This article was put into motion for example after the attacks on United States in 2001.
All other answers are not correct as they are not connected in any way with the creation of NATO.
The cost of supporting the American revolution caused the French king to propose tax increases