In the 15thC Portuguese sailors and rulers were the leaders of exploration. This week's task is double. An Inspiration diagram that answers the question in the heading 2. Some brief research into four of the main characters who made a contribution to Portugal's success. You have to say which of them do you think made the greatest contribution.
Details are at the end, here .
Here is a list of explanations Arab traders were willing to sell African slaves to Portuguese merchants. Portugal had a labour shortage. Africa soon proved to be a source of gold. These are not in the correct order. You have to match them up.