Dear Student,
States of matter was just coined by the people working in the field of science according to the properties that was possessed by different matter around us. Initially there was four of them solid, liquid, gas and plasma. These all occurred naturally, that is no one formed them.
Further one more state of matter came into existence named as Bose – Einstein condensate (BEC) was discovered through a collaboration between between Indian physicist Satyendra Nath Bose and Albert Einstein.
Regards