Complex sentence: As the exposition was drawing to a close, Putnam agitated for a permanent home to be found for the collection of artifacts amassed under his supervision, and late in 1893 what was to become the Field Museum of Natural History was incorporated, opening the following year.
Split into simpler sentences: As the exposition was drawing to a close, Putnam agitated for a permanent home to be found for the collection of artifacts amassed under his supervision. Late in 1893 what was to become the Field Museum of Natural History was incorporated, opening the following year.