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1859 Border Treaty (legacy record)

When: 1859 (legacy-derived, unverified)
Where: Signing place unresolved; legacy Mount Roraima attribution rejected
Part of: Brazil–Venezuela border treaty of 1859

A legacy record states that Brazil and Venezuela agreed in 1859 to trace their border along the Amazon–Orinoco water divide; no supplied passage verifies this.

The legacy record describes an agreement that the boundary between the Amazon and Orinoco basins follow the water divide. The year 1859 derives solely from that record, as does a May 5 date and a Mount Roraima signing location, all unverified by the supplied passages; the Mount Roraima attribution is treated as suspicious and corrected to an unresolved site. The passages confirm only the two countries' diplomatic relations and shared southern border.

Sources

Brazil–Venezuela relations Wikipedia, revision of 2026-08-08
Venezuela Wikipedia, revision of 2026-10-03

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.