Final answer:
Newport Gardner's contributions to the Black experience are not mentioned in the provided information. Marcus Garvey, on the other hand, played a significant role in promoting economic independence and self-reliance among Black Americans.
Step-by-step explanation:
Newport Gardner was not mentioned in the provided information, therefore there is no available information on his contributions to the Black experience. The information does mention Marcus Garvey and his contributions, including his promotion of economic independence for Black Americans, establishment of businesses, and advocacy for self-reliance and fair treatment. Garvey's efforts resonated with many Black Americans, as he sought to empower them economically and challenge the neocolonial power structure. However, it is important to note that the specific contributions of Newport Gardner to the Black experience are not addressed in the provided information.