Answer:
Einstein created a new theory, because his explanation of the interaction between light and gravity provided unity amongst many facts.
Step-by-step explanation:
Light is bent by gravity was a concept predicted and explained by Einstein.
Massive objects distort gravity and that is what feels like gravity. According to Einstein, gravity is said to be a consequence of the space time curvature.
Light follows the space time curvature. He explained that light is bent by mass. This concept is applied practically in astronomy and gravitational lenses are a part of astronomical calculations. They are used to deduce the mass of the objects in space.