Vesalius, Harvey, and Paré all made important contributions to Renaissance medicine that were aided by various factors. Vesalius' work was helped by war, the development of new technology like printing, and his teacher. Harvey's discoveries were supported by dissection, challenging previous ideas, and developments in technology. Paré advanced medicine through experiments, new surgical techniques like ligatures, and being an early adopter of new technologies like firearms. Overall, their work helped progress Renaissance medicine in anatomy, circulation, and surgical practices through factors like war, technology, challenging old ideas, experimentation, and communication of new findings.