13. Who made the first mobile? What type of sculpture is this an example of?

1.The pinnacle of Middle Ages artistic achievement was the Gothic Cathedral. These ‘stone bibles’ surpasses Classical architecture in terms of technological daring. Two engineering breakthroughs made this possible: ribbed vaulting and flying buttresses. These innovations allowed for huge stained glass windows, flooding interiors with light. Lattice-like quality and verticality characterize Gothic Architecture. What Cathedral is the most famous of this time and is in Paris, France?