A map of European languages today best shows evidence of ...

The Mongol conquests primarily impacted Asia and parts of Eastern Europe, but their influence on the languages of Western Europe is minimal. While the Mongols facilitated trade and cultural exchange, they did not significantly alter the linguistic landscape of Europe, as their empire did not encompass the core regions where Romance languages developed.

Silk-Road trade primarily linked the East and West, facilitating cultural and economic exchange, but it had a limited impact on the linguistic development of Europe. While it introduced some vocabulary and ideas, the direct evolution of European languages comes from the Roman influence rather than trade routes that connected disparate regions.

The Islamic conquests did affect several regions in Europe, particularly in the Iberian Peninsula, where Arabic influence is notable. However, the primary linguistic heritage in Europe is derived from Latin. Thus, while the Islamic conquests contributed to vocabulary in certain areas, they do not account for the overarching linguistic framework established by the Roman Empire.