Well as is said most of south america is food self sufficent, and a net food exporter, even in the Eighties(
source) as a region, individual cases by country have a lot of variation, plus a lot of the Government sponsored and Owned Industrial capacity was not yet destroyed by the privatization campaign of the nineties, As example Argentina was producing Tanks in this decade(
TAM), Chile was producng small arms and RPG´s style weapons in his FAMAE, Brasil Was making Supersonic Airplanes,none of wich is a "ligth" industry.
Argentina(
YPF) and Brasil(
Petrobras) have a really important oil industries and refineries that, again before the privatization process, were producing a lot of the internal consuming gas, Chile Have a important Refining Capacity with
ENAP, Peru have
Petroperu, Colombia
Ecopetrol, Venzuela have
PDVSA, Even Uruguay ahvea little refinery capacity in the
ANCAP, the transport is a no issue as most of it is done by Sea, and there are important new shipbuilding shipyard works in Chile, Brasil, Argentina, and Peru, Plus a important repair and modernization shipyards in Uruguay, Ecuador, Colombia, Venezuela an Bolivia( this is not a joke is for their River patrol navy), so transportation and oil is also a no issue, at least in the short time