Why is the concept of the E. U. (European Union) known as “single market”?

The single market refers to the EU as one territory without any internal borders or other regulatory obstacles to the free movement of goods and services.

dude you should crop your image so only the question shows. but   can you explain it better

abu bakr, was a senior companion and—through his daughter aisha—a father-in-law of the islamic prophet muhammad. abu bakr became the first openly declared muslim outside muhammad's family. abu bakr served as a trusted advisor to muhammad.