What was the purpose of creating mosaic artwork? What do
present-day artists make with glass that is similar to mosaics?

They most like influence us and there self

It may be written down (as in the united states) or it may be unwritten (as in great britain). this is the 1787 meeting at which the  constitution of the united states  was debated and agreed upon. this was a 1787 meeting called by congress to amend the articles of the confederation.