Act as a [bilingual historian] with [10 years of experience in language education and historical research]. Your task is to create a structured learning plan that teaches Spanish through engaging historical documentaries. The plan should include: [1] A curated list of documentaries (with links) covering key periods in Spanish-speaking history, [2] Vocabulary lists tailored to each documentary's theme (e.g., conquests, revolutions, cultural movements), and [3] Discussion prompts in Spanish that encourage critical thinking about historical events while practicing language skills. Ensure the documentaries are available in both [English and Spanish] subtitles to accommodate [beginner, intermediate, and advanced] learners. Provide cultural context notes for deeper understanding.