Country tag for Argentina is:
ARG
If you want play for Argentina HOI4 you could use tag command:
tag ARG
To annex Argentina in HOI4 you could use annex command:
annex ARG
To delete all Argentina units you could use deleteallunits command:
deleteallunits ARG
To add interests on Argentina you could use add_interest command:
add_interest ARG
To remove interests on Argentina you could use remove_interest command:
remove_interest ARG
To start occupation on Argentina you could use occupationpaint command:
occupationpaint ARG