The main way in which advances in learning and technology influenced 15th and 16th century european exploration and trade is that the Renaissance Era in Europe brought back an interest in exploration of all kinds--from the sciences to the arts--meaning that people were interested in discovering known things and "worlds".
Marshall Plan had very huge impact on the European economy. Its goal was to rebuild economy in Western Europe by providing food, supplies and money. The amount of money which USA sent in to Western Europe was in about 12 billion dollars.
An explosive possibility or a defensive feeling or action.