Greater Iran refers to a vast region that encompasses not only the modern nation of Iran but also parts of several neighboring countries. This area includes regions where Persian culture and language have historically influenced the population, such as Afghanistan, Tajikistan, Iraq, and parts of Turkey and Pakistan. The concept of Greater Iran is rooted in the historical expansion of the Persian Empire, which at its height included diverse ethnic groups and cultures. Today, it represents a cultural and linguistic sphere where Persian is spoken and where the legacy of Persian civilization continues to impact local traditions and identities.