Question

which of the many factors that led to hitlers rise to power seems to have been most important?
the illness and death of president von hindenburg
underestimation of the power of speeches and propaganda
aggressive elimination of political rivals
rewatch

Explanation:

Hitler's propaganda and powerful speeches were critical to mobilizing mass support, framing his message to exploit post-WWI German economic hardship, national humiliation, and anti-Semitic sentiment. This widespread public backing was the foundational driver that allowed him to gain political traction, enabling later actions like eliminating rivals and taking power after Hindenburg's death.

Answer:

undereatimation of the power of speeches and propaganda