Complex sentence: During the four months of the Exposition, over 2,600,000 people came to view its 4,062 exhibits, which featured social achievements, economic productivity, and community growth of the western region.
Split into simpler sentences: During the four months of the Exposition, over 2,600,000 people came to view it's 4,062 exhibits. The exhibits feature social achievements, economic productivity, and community growth of the western region.