Final answer:
The Fra Mauro World Map's south-up orientation and central placement of East Africa reflect the period's cartographic traditions and signal changing European worldviews. Venice and Portugal commissioned maps for navigation and claims during the Age of Discovery. The Cantino World Map underscores the expanding geographical knowledge and European perceptions following exploration.
Step-by-step explanation:
The Fra Mauro World Map (ca. 1460) is regarded as a pinnacle of medieval cartography for several reasons, including its south-up orientation and its central placement of East Africa rather than Jerusalem. This orientation might have been influenced by the Islamic world's cartographic traditions, as maps often reflected the perspective and knowledge of the cartographer. The lack of Jerusalem at the center signifies a shift in the worldview of Europeans, highlighting the importance of other regions in international trade and politics.
Rulers of Venice and Portugal had vested interests in accurate world representations, especially as these republics were emerging as maritime powers. Commissioning such maps was vital for navigation, trade routes planning, and asserting political claims, particularly during the Age of Discovery when new lands were being explored and claimed. The Cantino World Map (1502), for example, also showcases the state of geographical knowledge at the turn of the sixteenth century, including the implications of the Treaty of Tordesillas, which was a direct consequence of European exploration and papal decisions in apportioning newly 'discovered' lands.
Overall, these maps are critical historical evidence, providing insight not only into the geographical understanding of the times but also into the cultural, political, and ideological biases that influenced the cartographers and their patrons.