Select either two structural art that have significantly impacted its respective field. This could be a particular style, technique, or design concept.

Provide a brief overview of the historical context in which this innovation emerged. Highlight the key developments and influences that led to its creation.

Analysis of Innovation:$$Analyze how this innovation built upon past techniques or styles. Discuss the elements that distinguish it from previous approaches and how it contributed to the evolution of art or architecture.

Draw connections and comparisons between the selected works, highlighting both similarities and differences in their expressions of innovation.