Eightfold Way (in Particle physics) | Why Quarks?

There are hundred of Hadron particles out there. So one question that can be asked is that, are all these particles fundamental or are they made of of some other fundamental particles? In this regard, Murray Gell-Mann and Yuval Ne'eman independently suggested a method of organizing these hadron particles into charts or geometrical patterns based on same spin but different charge and different strangeness. This is known as the Eightfold Way (the name being inspired by the Eightfold path in Buddhism). The Eightfold Way is an organizational scheme of arranging these hadron particles into charts, some of which are -
1) Baryon Octet, consisting of the eight lightest baryons of spin 1/2
2) Meson Nonet, consisting of nine meson particles of spin 0
3) Baryon Decuplet, consisting of ten baryon particles of spin 3/2
and many more. All these suggested that the hadrons are infact made of of something more fundamental.
The Eightfold Way led to the Quark model, which created a new era in particle physics. It suggested that all baryons are made of up a combination of three quarks, while mesons are made up of quark-antiquark pair. Each hadron particle and its properties can now be explained by the individual properties of the quarks that constitute them (the up quark, the down quark, the strange quark)
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1. Four Fundamental Forces
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2. What are Antiparticles?
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3. What are Neutrinos?
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5. Parity Violation in Beta Decay
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6. What are Leptons?
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7. What are Hadrons?
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8. Lepton, Baryon, Strangeness Number
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9. Eightfold Way (in Particle physics)
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10. What are Quarks?
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