In which conflict was the "Line of Demarcation" established?

The "Line of Demarcation" was established during the Spanish and Portuguese colonization of the New World. This line was created as a result of the Treaty of Tordesillas in 1494, which aimed to resolve disputes over newly discovered lands between Spain and Portugal. The treaty divided the New World into two zones: lands to the west of the line would belong to Spain, while lands to the east would belong to Portugal. This division was significant because it laid the groundwork for the colonial empires of these two nations in the Americas, influencing their expansion and interactions with indigenous populations and other European powers for centuries.

In contrast, the other options refer to conflicts that occurred much later and do not involve the establishment of the Line of Demarcation. The American Revolutionary War took place in the late 18th century as the American colonies fought for independence from Britain. The French and Indian War occurred in the mid-18th century and was primarily a struggle between Britain and France for control of North America. The War of 1812 was fought between the United States and Great Britain, mainly over issues of maritime rights and territorial expansion. None of these events relate to the initial divisions of the New World established by the Treaty of Tordes