Cuales fueron los factores internos y externos que condicionaron el proceso que llevó a la independencia de las Provincias Unidas del Río de la Plata.

One drawback of voluntary trade is that it a.requires two groups to use a common language b.can make one group dependent upon another for necessary goods c.doesn't occur unless there is a shortage of goods for at least one group d.forces groups to rely on themselves to produce all the goods they need