Question

For sixteenth-century European cartographers, the drawing of a map was as much an exercise in imaginative geography as it was in empirical observation. While coastal outlines and well-traveled trade routes were recorded with increasing precision, the vast interiors of continents remained blank spaces—mysterious voids that challenged the cartographer's horror vacui. To fill these silent stretches of parchment, mapmakers did not merely leave empty spaces; instead, they populated the unknown with illustrations of mythical beasts, elaborate compass roses, and towering mountain ranges sketched from rumor. These decorative elements served a dual purpose: they masked the cartographer's ignorance while offering a narrative of adventure to wealthy patrons.

In these maps, the ocean was not merely a physical barrier but a canvas of anxieties, painted with thrashing sea monsters that symbolized the limits of human sovereignty. The land, too, was described in metaphorical terms. Cartographers spoke of 'breathing life' into a map, by which they meant the addition of artistic details that transformed a cold, mathematical grid into a living story. Thus, the map became a theater of the world, where the known and the unknown performed a delicate dance of coexistence. Rather than representing objective reality, these documents captured the mental landscape of an era standing on the threshold of global exploration.

Based on the second paragraph, which of the following best describes the meaning of the figurative phrase 'canvas of anxieties' as it is used to describe the ocean?