I'm not sure what specifically you're referring to when talking about what changed in 1926 so here's a resource for you that has a bit of information about what was going on in 1926.
http://www.thepeoplehistory.com/1926.html
Answer:
Static friction is a force that keeps an object at rest. It must be overcome to start moving the object. Once an object is in motion, it experiences kinetic friction. If a small amount of force is applied to an object, the static friction has an equal magnitude in the opposite direction.
The term sliding friction refers to the resistance created by two objects sliding against each other. This can also be called kinetic friction. Sliding friction is intended to stop an object from moving
Answer:
i looked uo yo question on google and dis what i got, cheif -->
"Locke wrote that all individuals are equal in the sense that they are born with certain "inalienable" natural rights. That is, rights that are God-given and can never be taken or even given away. Among these fundamental natural rights, Locke said, are "life, liberty, and property.""