1Achaemenid Empire
Emerged in 6th-century BC, led by Cyrus the Great, ruled over 35 million people.
2Cyrus the Great
Emperor of the Persian Empire, led the Persians to form a massive multi-ethnic empire.
3Central Asia to Egypt
Territory of the Persian Empire, reaching from Central Asia and India to Egypt and Greece.
4State System
Established by the Persian Empire, known for its military and administrative prowess.
5Multi-Ethnic Empire
Persian Empire under Cyrus the Great, encompassing diverse ethnicities.
6Population Control
Ruled over more than 35 million people, about half the world's population in that era.
7Persian Central Administration
Distinct from predecessors, laws from emperor, enforced by satraps
8Persian Bureaucracy
Complex system of administrators, tax collectors, record keepers
9Persian Economic Facilitation
Standardized coins, roads, mailing service for economic activity
10Persian Religious Toleration
Policy allowing local customs and religions to avoid rebellion
11Greek City-States
Local states practicing democracy, polytheism, lacking unity
12Greek Cultural Thread
Unity through medicine, science, philosophy across city-states
13Alexander the Great's Conquests
Military campaigns from Egypt to India, Hellenistic Era
14Hellenistic States
Divided among Alexander's generals, adopted Persian governance
15Greek Knowledge Legacy
Influence on later mathematicians, scientists, and philosophers
16Roman Republic Expansion
Conquests from Italy to Greece, borrowing from Greek culture
17Roman Citizenship Policy
Offered protections and privileges to conquered without conditions
18Roman Empire Split
Western and Eastern divisions, Byzantine Empire continuation
19Gupta Empire Golden Age
Period of prosperity, cultural development, and scientific innovations
20Warring States Period
Chinese era of conflict, Legalism system for state control
21Qin Dynasty Centralization
Established centralized empire, bureaucracy, and Great Wall
22Han Dynasty Golden Age
Expansion, cultural advancements, Silk Roads trade network