Final answer:
Adam Mickiewicz is often recognized as Poland's national poet, known for his works that significantly influenced Polish literature and national identity.
Step-by-step explanation:
In the book Resistance, the title of Poland's national poet is often attributed to Adam Mickiewicz. He was a preeminent figure in Polish literature and is widely regarded for his works that capture the Polish spirit. His masterpieces, such as Pan Tadeusz and Dziady (Forefathers' Eve), played a significant role in preserving Polish identity, especially during periods of foreign occupation and political turmoil.