The best clarinets are wooden. Wooden clarinets are black. The colored ones are probably plastic, and I doubt they sound very good.
no the colored clarinets dont last as long as black ones
No.
Boosey and Hawkes
No they don't they both work just fine but i would prefer a black one.
It's my absolute favorite
No. I have heard that you can break those clarinets in half easily. Are you looking for a beginning clarinet? If you are to get any clarinet, I would invest a little bit more money and buy a brand like Selmer, Yamaha, or a Buffet B12. Those are good brands for a beginning clarinetist.
they are around 400$ and they are cheap, made in CHINA.
Probably because they are both Treble clef instruments.
Clarinets are most commonly made of plastic but good ones are made of wood
These clarinets, as you probably suspect, are made in china. They are around $100 or less, and in this case the saying "you get what you pay for" applies. They are not really that good, they may be OK for a beginner, but if you are planning to develop a good sound and eventually become good at playing clarinet you may be well off by exploring other possibilities/brands.
Clarinets weren't invented until the 1700's