Define the internal market and its four freedoms.

Art. 26(2) TFEU: Internal market is the area without internal frontiers. It is realized by four freedoms: 1. Goods (art. 30, 34, 110 TFEU) 2. Workers (art. 45 TFEU) 3. Services (art. 56 TFEU) 4. Capital (art. 63 TFEU)