With a POD of 1720, have the State of Minas Gerais be an independent country.
The rules for this AHC are:
1 - At least the majority of the territory of OTL Minas Gerais must be in this country;
2 - Minas Gerais can expand and annex more territories, although it's not obligatory and one should be careful not to make ASB expansions (Amazonian territory is impossible in Minas Gerais);
3 - The rest of Lusophone America doesn't need to be balkanized, although it's up to you whether to balkanize it or not.
The rules for this AHC are:
1 - At least the majority of the territory of OTL Minas Gerais must be in this country;
2 - Minas Gerais can expand and annex more territories, although it's not obligatory and one should be careful not to make ASB expansions (Amazonian territory is impossible in Minas Gerais);
3 - The rest of Lusophone America doesn't need to be balkanized, although it's up to you whether to balkanize it or not.