From 1640 to 1729 they gradually worked out tenuous but stable diplomatic and commercial relations (for example the Treaties of Nerchinsk and Kyakhta), but their relations became a serious problem after 1858 when Russia annexed the Amur River basin and Vladivostok.
They gradually worked out tenuous but stable diplomatic and commercial relations (for example the Treaties of Nerchinsk and Kyakhta). This was from 1640 to 1729. Their relations became a serious problem after 1858. This was from 1640 to 1729. Russia annexed the Amur River basin. Russia annexed Vladivostok.