Final answer:
The question lacks sufficient context to determine the specific effects of J. W. Tucker's martyrdom on salvation; however, historical patterns indicate that martyrdoms can inspire faith and conversions.
Step-by-step explanation:
The question refers to J. W. Tucker's martyrdom and its impact on the salvation of many individuals. Within the historical context, it is known that missionaries played a crucial role in spreading Christianity and civilization's 'gifts' to colonies around the world. This evangelization process often came with various consequences, some leading to conversion and others to rebellion or strife, as seen in the Nat Turner rebellion and the Belgian Congo incidents. In Tucker's case, the information provided does not contain enough context to decisively answer how his martyrdom resulted in many salvations, but historical patterns suggest that martyrdom could often inspire faith among observers, potentially leading to a surge in conversions or other faith-based actions.