What does matter must have in order to create sound​

what do you mean?

Explanation:

Sound is a form of energy that is produced by vibrating matter.   Where there is no matter there is no sound. Sound waves must have a medium (matter)  to travel through. When we talk, sound waves travel in the air. Sound also travels in liquids and  solids. How fast speed travels, or the speed of sound, depends on the kind of matter it is  moving through.  Of the three phases of matter (gas, liquid, and solid), sound waves travel the slowest  through gases, faster through liquids, and fastest through solids.

a: that she is losing interest in her relationship with arobin just took !

the development of trade during the middle age increased to the change given in the agriculture, which gave money, industry and markets a bigger importance in economy. the agriculture production was more than the consumption, which meant the creation of wider markets out of the areas. besides, with the end of multiple wars, the population increased and new trade routes were created.