The term "Great Vowel Shift" refers to a period between the 14th and the 17th century in which important changes occur in the pronunciation of the English language, especially in the case of long and short vowels, but also some consonants changed and became silent. These changes did not only affected all the communities that spoke the language and the evolution of the language itself but led to gaps between the way words are written and pronounced which made the spelling of modern English to have irregularities as there is a gap between the way words are written and their pronunciation. Considering this, it can be concluded it is true during the Great Vowel Shift long vowel sound changed and this lead to spelling irregularities.
That dose look good. I would take out from "...or based on facts". Art is mainly based off of opinion. I would say that "Art and what it has done has changes the world greatly."
