Which modern country was the Sassanid Empire?

The question relates to historical empires and their modern geographical counterparts. The Sassanid Empire, also known as the Neo-Persian Empire, was a powerful Iranian empire that existed from 224 to 651 AD. Its cultural, political, and geographical heartland was primarily located in what is modern-day Iran. The Sassanids were the last pre-Islamic Persian empire, leaving a profound legacy on Iranian culture and history.

• Pakistan: Was part of various empires, but not the core Sassanid territory.
• China: Had its own distinct imperial dynasties, entirely separate from the Sassanids.
• India: Home to its own ancient empires (e.g., Gupta, Maurya), not the Sassanid Empire.

The distractors are other countries that were not the primary territory of the Sassanid Empire.