Chicago and New York, May 16, 2025 (GLOBE NEWSWIRE) -- Optimizing your business and leveraging relationships were key themes throughout the Christie’s International Real Estate 2025 Summit, held May 4-8 at the Plaza Hotel in New York City.  Christie’s International Real Estate broker-owners and agents from 34 countries attended the event to network with fellow affiliates, learn from Christie’s International Real Estate executives and some of the world’s leading business and creative minds, and celebrate the ...