Why can the researches of Robert hooke and Anton van leeuwenhoek be considered the beginning of microscopy and microbiology?

Robert Hooke and Anton van Leeuwenhoek were instrumental in the early developments of microscopy and microbiology. Hooke's work with microscopes led to the discovery of cells, while Leeuwenhoek's advancements in microscopy allowed him to observe and describe microorganisms for the first time. Together, their research laid the foundation for the fields of microscopy and microbiology.