Exchange of ratifications took place on 13 March 1827, and the Parliament of the United Kingdom passed legislation on 2 July 1827 to enforce the treaty, the Slave Trade (Convention with Brazil) Act 1827 (7 & 8 Geo.
In response, on 2 July 1827, deputy Raimundo José da Cunha Mattos, a member of the Committee who opposed the treaty, delivered a two-hour speech in defence of the continuation of the slave trade.
[4] The treaty made it illegal for any subject of the empire of Brazil to be engaged in carrying out the African slave trade.
It provided a three-year grace period after the exchange of ratifications, which meant that the ban took effect on 13 March 1830.
c. 122), which authorised British warships to board Brazilian ships and seize any found to be involved in the slave trade.