2D is flat and 3D is visible in 3 dimensions and looks like it is popping out.
Answer:
A common motive is that creating art in a format which utilizes public space allows artists who may otherwise feel disenfranchised to reach a much broader audience than other styles or galleries would allow.
Street art encompasses many other media, such as LED art, mosaic tiling, stencil art, sticker art, reverse graffiti, "Lock On" sculptures, street installations, wheatpasting, woodblocking, yarn bombing, and rock balancing.
The availability of cheap hardware and software allows street artists to become more competitive with corporate advertisement
Explanation:
Art was so important because it helped express their thoughts and feelings.
