Final answer:
The romantic drama of the early 1800s embraced Romanticism, emphasizing emotion, individualism, and the sublime attributes of nature, thus rejecting Neoclassic rules and contributing significantly to the development of realism.
Step-by-step explanation:
The sensibility embodied in the romantic drama of the early 1800s which rejected neoclassic rules and was pivotal in the development of realism was a deep emphasis on emotion, individualism, and the sublime power of nature over the rational and structured principles of the Neoclassical period. This aesthetic and intellectual movement, known as Romanticism, celebrated the emotional experience of art and favored intense and unexpected surges of emotions in contrast to the reserved and rational ideals of the Neoclassical era. The Romantic era focused on subjectivity, the glorification of the past, and a heightened appreciation for the natural world, which often challenged the societal changes brought upon by industrialization.