Your question is not descriptive enough to me, but I'll assume you are asking what is the Biblical reason for all the different languages we speak today?
After Noah's Flood, God's command from Genesis 1:28, for man to fill the earth, was still what God desired. However, Nimrod opposed God and instead wanted to build "a tower with its top in the heavens, and let us make a celebrated name for ourselves, for fear we may be scattered over all the surface of the earth." (Gensis 10:8,9; 11:4) So God confused their language so that they scattered over the surface of the earth. (Genesis 11:7,8) Hence, the place came to be known as Babel (or Babylon), meaning "confusion". (Gensis 11:9)