What is the importance of elementary particle, plasma and condensed matter physics?

[Adeoye Temitope]

I'm an UG and I'm looking to major in theoretical physics, I learned that Elementary particle physics, plasma physics and condensed matter physics are of major importance. If so, of what importance are they?

 

[Vanadium 50]

I learned that Elementary particle physics, plasma physics and condensed matter physics are of major importance. If so, of what importance are they?

Major importance.