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The whole Roman realm had a short period of peace under one of the Balkan emperors, Probus, until his troops murdered him in 282. Then Diocles, or Diocletian, a man of genius and statesmanship became emperor and reorganized the empire. A native Illyrian and Dalmation soldier, he abandoned Rome and made his headquarters at Nicomedia, a few miles south of Byzantium in Asia Minor. He delegated control of the western half of the empire to his general, Maximian, as co-ruler in the city of Ravenna, Italy, and then made extensive political reforms including the division of the empire into four major prefectures and then forming further subdivisions as dioceses and finally provinces. (Ref. 28 ) At that time the empire was said to have 435,000 men under arms, chiefly infantry. Finally Diocletian, falling prey to the common curse of ancient men of power, claimed that he was the earthly embodiment of Jupiter, while Maximian consented to be Hercules. This identification of god and king meant the final failure of republican institutions of antiquity and a reversion to the forms and theories of Achaemenid and Egyptian courts. From this orientalized monarch came the structure and form of Byzantine and the European kingdoms until the time of the French Revolution. All that was needed now was to ally the oriental monarch in his oriental capital with an oriental faith. Byzantinism began with Diocletian. (Ref. 48 , 127 )

Central europe

As the Germanic tribes migrated westward, behind them the Slavs began to cross the Elbe and filter into modern Bohemia, Moravia and parts of eastern Germany. The Marcomanni, who were already in this area, raided westward and southward, even into Italy itself. The Frankish tribes invaded across the Rhine and along with the Alemanni also attacked directly into Italy. In battles from A.D. 270 to 275 the Emperor Aurelian finally stopped these invasions and held the Germanic tribes essentially at the Rhine once again. In the Pannonian diocese, which included most of Austria, Hungary and the western edge of Yugoslavia, the Asding branch of the Vandals had replaced the Iazygians as the dominant element in the southern portion, while the Gepids (related to the Goths) occupied the north. (Ref. 136 , 127 )

Western europe

Spain became a large scale producer of wine, olive oil and other products, including a delicious fish-paste. Some insurrections in this country, as in other parts of the empire, were eventually put down by Aurelian. Revolt leaders Postumus and Tetricus in Gaul were also eventually defeated. In Belgium the Franks swept the Gaulic Celts into the south, giving rise to the original language barrier with the northern Germanic tongue dominant at that time. In England, late in the century the pirates were so numerous around the coasts that Carausius, who happened to be a Belgian sailor, was assigned by the Roman authorities to clear the North Sea and the channel of these brigands. He did so, using mercenaries of Germanic and Frankish origin. But he made enemies in Rome and was murdered in A.D. 293 by his finance officer, Allectus, who then kept England independent of Roman control for three years, until Constantius Chlorus re-conquered the area using a new navy and fresh troops. (Ref. 8 , 43 , 136 , 24 )

Scandinavia

In this area the most significant change from recent centuries was the replacement of all Lapps and Finns in Denmark by Germanic tribes by A.D. 250. Included in the latter group were the definitive Danes. Roman coins of the 3rd century have been found on Iceland, presumably taken there by the Roman Emperor Constans who sailed in pursuit of Celtic pirates who had raided Wales and then led their pursuer to an arctic island.

(Ref. 175 , 66 )

Eastern europe

Traveling from north to south in this region, we would find Finns in the sparsely settled far north, but south of them going from west to east along the Baltic, we would find first the Balts, then a large area of Slavs and finally, just north of the Black Sea, various Iranian tribes, including the Roxolani and Alans. By A.D. 300 the Ostrogoths had expanded eastward across the Ukraine to dominate the Roxolani, but otherwise there was not much change throughout this century with the possible exception that there may have been some Turkish-speaking Hunnish people already drifting into this area. (Ref. 136 , 127 )

Forward to Europe: A.D. 301 to 400

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Questions & Answers

who was the first nanotechnologist
Lizzy Reply
k
Veysel
technologist's thinker father is Richard Feynman but the literature first user scientist Nario Tagunichi.
Veysel
Norio Taniguchi
puvananathan
Interesting
Andr
I need help
Richard
anyone have book of Abdel Salam Hamdy Makhlouf book in pdf Fundamentals of Nanoparticles: Classifications, Synthesis
Naeem Reply
what happen with The nano material on The deep space.?
pedro Reply
It could change the whole space science.
puvananathan
the characteristics of nano materials can be studied by solving which equation?
sibaram Reply
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sibaram
synthesis of nano materials by chemical reaction taking place in aqueous solvents under high temperature and pressure is call?
sibaram
hydrothermal synthesis
ISHFAQ
how can chip be made from sand
Eke Reply
is this allso about nanoscale material
Almas
are nano particles real
Missy Reply
yeah
Joseph
Hello, if I study Physics teacher in bachelor, can I study Nanotechnology in master?
Lale Reply
no can't
Lohitha
where is the latest information on a no technology how can I find it
William
currently
William
where we get a research paper on Nano chemistry....?
Maira Reply
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
has a lot of application modern world
Kamaluddeen
yes
narayan
what is variations in raman spectra for nanomaterials
Jyoti Reply
ya I also want to know the raman spectra
Bhagvanji
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
STM - Scanning Tunneling Microscope.
puvananathan
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, A comprehensive outline of world history. OpenStax CNX. Nov 30, 2009 Download for free at http://cnx.org/content/col10595/1.3
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