source: This resulted in both Montenegro and Serbia becoming independent countries.
target: Montenegro and Serbia became independent countries.
references: Montenegro and Serbia became independent countries. Montenegro and Serbia became independent countries. Montenegro and Serbia both became independent countries. This resulted in Montenegro and Serbia becoming independent countries. This resulted in both Montenegro and Serbia becoming independent This caused Montenegro and Serbia to become independent countrie.s Because of this, Montenegro and Serbia split up. This ended up with both Montenegro and Serbia becoming independent countries. Montenegro and Serbia became independent countries. This caused  Montenegro and Serbia to becoming free countries.