Final answer:
Negotiations between European powers contributed to future conflicts through the division of territories and the formation of alliances, which contrasted with later efforts toward cooperation seen in the European Union and Oslo Accords.
Step-by-step explanation:
The negotiations between European powers laid the groundwork for 20th-century conflicts by establishing spheres of influence, triggering arms races, and fostering alliances and enmities. Major events, such as the formation of the European Union and the Oslo Accords, reflected a shift towards cooperation and regional stability in modern times. Contrasting those, historical patterns of division and negotiation set by events like the colonization of Africa, the Gold Standard, and nationalistic revolutions often escalated tensions leading to conflicts like World Wars.