Empire of Persia or The Persians.
The original person why replied to this said "Empire of Persia or The Persians", however this is incorrect. Persia is a Greek word, and the indigenous and domestic name of what we know as Persia has always been Iran. It was only until 1935 that Iran was known as Persia, in 1935 Reza Shah, a stern nationalist, changed Persia's name back to Iran as it always was. However, Iranians at the time, like always, were calling their nation Iran.
Hard concept to grasp? Think Japan-Nippon, Croatia-Hrvatska, Germany-Deustchland ;)
Tehran
ELAM
Forooghian is a Persian name, originating from Iran. It is a common last name in Iran and is believed to have ancient Persian roots.
The ancient name for Iran was Persia; see Persian history.
Persia is the ancient name of Iran and Islam entered Iran near 1400 years ago. and when tragedy of karbala happened most of Iranians became shia.
Mesopotamia is located in present-day Iraq
Modern Iran is where Persia originated, but during its peek expansion Persian Empire included most of the Middle East and Asia Minor.
Iran used to be called Persia - six letters.
Iran is the ancient name of the country; the Aryan tribes who formed the country in the Achaemenid era united the plateau in that region and called the country Iran (Aryanam in ancient texts), meaning "the land of Aryans". The name Persia was introduced much later (around 600 BC) and it derives from the ancient Greek name (Persis) for Iran's maritime province called Fars/Pars. Based on this, other European nations termed the area Persia. On March 21, 1935 Iran formally asked the international community to call the country by its native name. In 1959, Shah Mohammad Reza Pahlavi, before his removal from power announced that both Persia and Iran can be used interchangeably.
Iraq and Iran were parts of Persia
Iran was Persia.
It is neither a country nor a state. It is a name of an ancient region where you now find Iraq, Kuwait and parts of Syria, Iran and Turkey.