1 he was a skillful politician
A)To protect convoys of merchant ships
Many other countries, especially Spain and France, reacted strongly to Portugal's success in exploration, by launching aggressive exploration campaigns themselves, since it was clear that the New World had many riches to offer.
Using the military (send volunteers, national guard stuff ect)
trade sanctions (which have to be approved by congress)
nuclear strikes
declarations of war(which have to be approved by congress)
and meeting with leaders of other sovernt countries
