300 (three hundred) is the natural number following two hundred ninety-nine and preceding three hundred one.

Mathematical properties

It is a triangular number and the sum of a pair of twin primes (149 + 151), as well as the sum of ten consecutive primes (13 +
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Upper Paleolithic
• 10th millennium BC | 9th millennium BC | 8th millennium BC
• 7th millennium BC | 6th millennium BC | 5th millennium BC

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The 3rd century is the period from 201 to 300 in accordance with the Julian calendar in the Christian Era.

Overview

After the death of Commodus in the previous century the Roman Empire was plunged into a civil war.
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As a means of recording the passage of time, the 4th century (per the Julian/Gregorian calendar and Anno Domini era) was that century which lasted from 301 to 400.

Overview

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The 5th century is the period from 401 to 500 in accordance with the Julian calendar in Anno Domini, the year of our Lord.

Overview

The Western Roman Empire is ruled by a succession of weak emperors, and true power falls increasingly into the hands of powerful generals.
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list of decades which have articles with more information about them.

During the twentieth century, it became popular to look at that century's decades as historical entities in themselves.
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Centuries: 3rd century - 4th century - 5th century

290s 300s 310s - 320s - 330s 340s 350s
320 321 322 323 324
325 326 327 328 329

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Events and Trends

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Centuries: 3rd century - 4th century - 5th century

300s 310s 320s - 330s - 340s 350s 360s
330 331 332 333 334
335 336 337 338 339

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Events and Trends

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Centuries: 3rd century - 4th century - 5th century

310s 320s 330s - 340s - 350s 360s 370s
340 341 342 343 344
345 346 347 348 349

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Events and Trends

• Ulfilas missionary to the Goths

Significant people

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Centuries: 3rd century - 4th century - 5th century

320s 330s 340s - 350s - 360s 370s 380s
350 351 352 353 354
355 356 357 358 359

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Events and Trends

• 350, About this time the Huns begin to invade the Sassanid Empire.

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Centuries: 3rd century - 4th century - 5th century

330s 340s 350s - 360s - 370s 380s 390s
360 361 362 363 364
365 366 367 368 369

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Events and Trends

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Centuries: 3rd century - 4th century - 5th century

340s 350s 360s - 370s - 380s 390s 400s
370 371 372 373 374
375 376 377 378 379

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Events and Trends

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Centuries: 3rd century - 4th century - 5th century

350s 360s 370s - 380s - 390s 400s 410s
380 381 382 383 384
385 386 387 388 389

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Events and Trends

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This page indexes the individual years pages.

Twenty-first century

2100 - 2099 - 2098 - 2097 - 2096 - 2095 - 2094 - 2093 - 2092 - 2091

2090 - 2089 - 2088 - 2087 - 2086 - 2085 - 2084 - 2083 - 2082 - 2081

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4th century · 5th century
320s 330s 340s 350s 360s 370s 380s
352 353 354 355 356 357 358
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4th century · 5th century
320s 330s 340s 350s 360s 370s 380s
353 354 355 356 357 358 359
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4th century · 5th century
320s 330s 340s 350s 360s 370s 380s
354 355 356 357 358 359 360
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4th century · 5th century
320s 330s 340s 350s 360s 370s 380s
356 357 358 359 360 361 362
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4th century · 5th century
330s 340s 350s 360s 370s 380s 390s
357 358 359 360 361 362 363
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4th century · 5th century
330s 340s 350s 360s 370s 380s 390s
358 359 360 361 362 363 364
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Axum – MHDYS, King of Axum (c.350)

Asia

• China (Western Jin Dynasty) - Emperor Mu, Emperor of China (344-361)
• Gupta Empire – Samudragupta, Gupta Emperor of India (335-380)
• Japan

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Gregorian calendar is the most widely used calendar in the world. A modification of the Julian calendar, it was first proposed by the Calabrian doctor Aloysius Lilius, and was decreed by Pope Gregory XIII, for whom it was named, on 24 February 1582 via the papal bull
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Ab Urbe condita (literally, "from the city, having been founded") is a monumental history of Rome, from its legendary founding (ab Urbe condita, dated to 753 BC by Varro and most modern scholars). The book was written by Titus Livius (around 59 BC–AD 17).
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Armenian calendar uses the Armenian numerals. It begins in AD 552 as the start of the Armenian era.

Dates are marked by the letters ԹՎ
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Buddhist calendar is used on mainland Southeast Asia in the countries of Cambodia, Laos, Thailand, Myanmar (formerly Burma) and Sri Lanka in several related forms. It is a lunisolar calendar having months that are alternately 29 and 30 days, with an intercalated day and a 30-day
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Chinese calendar is a lunisolar calendar, incorporating elements of a lunar calendar with those of a solar calendar. In China today, the Gregorian calendar is used for most day to day activities, but the Chinese calendar is still used for marking traditional Chinese holidays such
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The Chinese sexagenary cycle (Chinese: 干支; Pinyin: gānzhī) is a cyclic numeral system of 60 combinations of the two basic cycles, the ten Heavenly Stems (天干;
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The Chinese sexagenary cycle (Chinese: 干支; Pinyin: gānzhī) is a cyclic numeral system of 60 combinations of the two basic cycles, the ten Heavenly Stems (天干;
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Coptic calendar, also called the Alexandrian calendar, is used by the Coptic Orthodox Church. This calendar is based on the ancient Egyptian calendar. To avoid the calendar creep of the latter, a reform of the ancient Egyptian calendar was introduced at the time of Ptolemy
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Ethiopian calendar (Amharic: የኢትዮጵያ ዘመን አቆጣጠር ye'Ītyōṗṗyā zemen āḳoṭaṭer), also called the
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