RESEARCH BASE
Search 3,721 documents across 34 fields — every claim tier-rated by evidence
3,633 are the core, quality-scored corpus (34 lettered sections — see How We Work); the remaining 88 are cross-corpus synthesis documents (68 InterDocs, 12 Connections, 8 Theories) also indexed here.
3,434 results for "cluster B" — page 73 of 172
W_1_26 — Mycenaean Civilization
The Mycenaean civilization (c. 1600–1100 BCE) was the first major civilization of mainland Greece and the dominant power of the Aegean during the Late Bronze Age. Named after the citadel of Mycenae in the Argolid (northe
W_1_16 — Hittite Empire: Anatolia's Forgotten Superpower
The Hittite Empire (c. 1650–1178 BCE) dominated Anatolia and northern Mesopotamia for nearly five centuries, rivaling Egypt, Babylon, and Assyria as one of the Late Bronze Age's four "Great Powers." Operating from their
W_1_27 — Minoan Civilization & Thalassocracy
The Minoan civilization — Europe's first advanced literate society — flourished on Crete and surrounding Aegean islands from approximately 2700–1450 BCE, predating Mycenaean Greece and exercising maritime dominance (thal
W_2_26 — Mauryan and Ashokan Empire
The Mauryan Empire (c. 322–185 BCE) was the first empire to unify nearly the entire Indian subcontinent under a single political authority, stretching at its zenith from Afghanistan and Baluchistan in the west to Bengal
W_2_18 — Majapahit Empire
The Majapahit Empire (1293–c. 1527 CE) was the last major Hindu-Buddhist state in Java and arguably the most powerful maritime polity in Southeast Asian history. At its zenith under King Hayam Wuruk (r. 1350–1389) and hi
W_2_21 — The Khmer Empire and Angkor
The Khmer Empire (~802–1431 CE), centered in present-day Cambodia, was one of the most powerful and spatially extensive states in Southeast Asian history, and its capital Angkor was the largest preindustrial city on Eart
W_2_17 — Khmer Empire & Angkor Hydraulics
The Khmer Empire (c. 802–1431 CE), centered in modern Cambodia, was one of the most powerful and technologically sophisticated states in Southeast Asian history. Its capital, Greater Angkor, covered approximately 1,000 k
W_2_23 — Pyu City-States
The Pyu city-states (c. 200 BCE – 1050 CE) were the earliest urbanized polities in mainland Southeast Asia, located in the dry zone and Irrawaddy River valley of modern Myanmar (Burma). Three major walled cities — Beikth
W_2_16 — Srivijaya Maritime Empire
Srivijaya (c. 650–1377 CE) was a Malay Buddhist thalassocracy centered on the island of Sumatra (modern Indonesia) that dominated maritime trade across the Strait of Malacca and the South China Sea for over 500 years. At
W_5_28 — Tairona Civilization and Ciudad Perdida
The Tairona were a complex chiefdom-level society that flourished in the Sierra Nevada de Santa Marta mountains of northern Colombia from approximately 200 CE to the Spanish conquest (~1600 CE). Their most spectacular ac
W_5_31 — Muisca Confederation and El Dorado
The Muisca (also called Chibcha) confederation occupied the high-altitude plateaus of the Eastern Cordillera of Colombia (2,600 m elevation, modern Boyacá and Cundinamarca departments) and represents one of the most comp
ZH_4_02 — Precession in Ancient Culture: Hamlet's Mill Thesis
Hamlet's Mill: An Essay on Myth and the Frame of Time (1969), by MIT historian of science Giorgio de Santillana and ethnologist Hertha von Dechend, is one of the most intellectually ambitious — and controversial — works
ZH_4_01 — Stonehenge Astronomical Alignments: Solar, Lunar, Eclipse
Stonehenge, the iconic late Neolithic/early Bronze Age monument on Salisbury Plain, Wiltshire, England (constructed in phases from c. 3000–2000 BCE), has been at the center of archaeoastronomical debate since the 18th ce
ZH_4_10 — Sirius in World Cultures: Rising Star and Calendar Anchor
Sirius (α Canis Majoris) is the brightest star in the night sky (apparent magnitude −1.46) — and has been one of the most culturally significant stars in human history. Its pre-dawn heliacal rising (the first day it beco
ZH_3_13 — Women in Astronomy: Hypatia, Caroline Herschel, Henrietta Leavitt
Women have contributed to astronomy from antiquity to the present — often against formidable institutional barriers, many of which persisted well into the 20th century. Hypatia of Alexandria (~355–415 CE) was a renowned
ZH_5_16 — Eclipse Prediction and the Saros Cycle
The Saros cycle — a period of approximately 6,585.3 days (18 years, 11 days, 8 hours) after which the Sun, Moon, and lunar nodes return to nearly identical relative positions — has been the primary tool for eclipse predi
ZH_5_22 — Indian Astronomical Traditions: From Vedanga Jyotisha to the Kerala School
Indian astronomical traditions represent one of the longest continuous programs of celestial observation and mathematical modeling in human history, spanning from Vedic-period naked-eye observations (c. 1500–500 BCE) thr
ZH_2_19 — Petra Astronomical Alignments
Petra — the Nabataean capital carved into sandstone cliffs in southern Jordan, active from approximately 400 BCE to 106 CE — contains a sophisticated network of astronomical alignments integrated into its monumental arch
ZH_1_15 — Star Catalogs: From Hipparchus to Hipparcos and the Tycho Catalog
A star catalog — a systematic list of stars with their positions, magnitudes, and sometimes colors, proper motions, and spectral types — is the foundational document of observational astronomy. The compilation of ever mo
ZH_1_19 — Origins of the Zodiac
The zodiac — the band of ~8° on either side of the ecliptic (the Sun's apparent annual path across the sky) divided into 12 equal 30° segments, each named after a constellation — originated in Mesopotamian astronomy duri
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