In the romantic era (1820-1900), artists of all kinds became intent in what? the term “romanticism” derived from what? define. nationalist composers from non-germanic countries turned to what for their inspiration? what led to the further expansion of the orchestra?

Romanticism was an artistic, literary, musical and intellectual movement that originated in Europe toward the end of the 18th century and in most areas was at its peak in the approximate period from 1800 to 1850. Romanticism was characterized by its emphasis on emotion and individualism as well as glorification of all the past and nature, preferring the medieval rather than the classical. It was partly a reaction to the Industrial Revolution, the aristocratic social and political norms of the Age of Enlightenment, and the scientific rationalization of nature - all components of modernity. It was embodied most strongly in the visual arts, music, and literature, but had a major impact on historiography, education, and the natural sciences. It had a significant and complex effect on politics, and while for much of the Romantic period it was associated with liberalism and radicalism, its long-term effect on the growth of nationalism was perhaps more significant.

The answer is protestant reformation.