"When we look at the last 150 years, two patterns emerge: when there was an increase in international trade, there was sustained growth in the world economy; when nationalism increased and barriers to trade between countries were put in place, the world economy suffered and, worse than that, there were two world wars."

Read here the most recent opinion article by Alberto Castro, invited Full Professor at Católica Porto Business School, published in Dinheiro Vivo (available in portuguese).