Costa Rican trade unions called on Monday for a one-day general strike next month to oppose ratification of a regional free-trade pact with the United States, which they fear could hurt standards of living. More than 200 unions and civic groups are expected to take part in the stoppage on Nov. 17, which seeks to pressure the Costa Rican Congress to reject the U.S.-Central American Free Trade Agreement, or CAFTA, union leaders said. Costa Rica is the only Central American nation yet to ratify the agreement. It has been approved by the United States, Guatemala, El Salvador, Honduras, Nicaragua and...