 Complete the following phrase:  In the 17th century, however, Genoa entered a period of crisis. In May 1625, a French-Savoian army invaded the republic but was successfully driven out by the combined Spanish and Genoese armies. In 165657, a new outburst of plague killed as many as half of the population. In May 1684, as a punishment for Genoese support for Spain, the city was 