Episode 4 of 4

Ratification and Implementation

When: August 1860
Where: Timor Island
Part of: Portugal and the Netherlands divide the island of Timor

The treaty was ratified in August 1860, but local transfers were out of sync with that official ratification.

The 1859 border treaty was not implemented all at once, with local transfers out of sync with the official ratification in August 1860. The treaty's occurrence date is 20 April 1859; August 1860 is the ratification date, a distinct milestone from the signing.

Sources

Portuguese Timor Wikipedia, revision of 2026-09-09
Treaty of Lisbon (1859) Wikipedia, revision of 2026-01-11

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.