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A.d. 1001 to 1100

Backward to A.D. 901 to 1000

In the time of the European Middle Ages urban sites and countryside were intimately connected. A town of 3,000 people required the produce of some 10 villages and 8.5 square kilometers of surrounding land to survive. Long distance trade was available only to a few exceptional cities, such as Mecca, Istanbul, Florence, Venice, Naples, Rome, Bruges, Delhi and Peking. The real leader of the world, beginning in this century and lasting for about 400 years, if the Europeans had but known it, was China, where remarkable achievements in industry and armaments occurred. (Ref. 260 , 279 )

The christian church

The reforms initiated by the Cluniac monasteries spread quickly and reached Rome when Emperor Henry III started a papal reform at the Synod of Sutri, in 1046. The actual church administration reform began under Pope Leo IX in 1049 and was continued by Gregory VII, called Hildebrand, one of the strongest pontifs in history who, himself, had been a monk of Cluny. His reforms included attacks on simony (the sale of ecclesiastical offices) and lay investiture (the right of kings to appoint bishops, etc.). He tried to give spiritual unity to the western church without interfering in secular rule, but his doctrines led to a life and death struggle with the empire and in the end he too turned to militarism via alliances with the Normans, who had conquered southern Italy and Sicily. The Great Schism (the final splitting of the Greek Orthodox and Latin Catholic churches) occurred in 1054 over a point of theology.

In previous years Christian pilgrims had traveled to the holy places in the Middle East unmolested by the Arabs, but at the beginning of this 11th century the "Mad Caliph" Hakim began to prey upon these travelers and profane the Holy Sepulchre. At the end of the century Emperor Alexius I of Byzantine appealed to the western princes for help when he was again threatened by the Moslems. Thus, in 1095 the 1st Crusade was summoned by Pope Urban. The first ill-organized wave of crusaders sacked Hungary and the Balkans en route to the east and were, in turn, massacred by the Turks when they did arrive in Asia Minor. Antioch did fall to Bohemund of Otranto after a 9 month siege but he lost 5,000 of his 7,000 horses to hunger and disease and so many men died so quickly that it was not possible to bury all of them and the bodies contaminated cisterns and aqueducts, aggravating the epidemic. In 1099 a final wave of crusaders finally did reach Jerusalem where the Moslems remaining in the city were slaughtered, but the particular Turks that they had come to fight had already been run out by the Fatimids of Egypt a year previously. (Ref. 8 , 49 , 42 , 222 ) (See map on page 603)

Causes of the crusades

  • The continuous advance of the Seljuq Turks
  • The dangerous weakening of the Byzantium Empire, tempting conquest by the Turks
  • The ambition of Italian cities such as Venice, Genoa, Pisa and Amalfi to extend their commercial power and the ambition of adventurous princes
  • The agricultural revolution north of the Alps, which meant more people - a population explosion of healthy, energetic people, with a natural impulse to travel and go for adventure
  • Envy for the riches and luxury of the East. (Ref. 49 , 211 , 42 )

The islamic church

A conflict between religion and science developed within Islam, with three separate groups of thinkers deviating from the orthodox concepts. These were:

  • Theists - accepting Allah and immortality, but denying creation and resurrection of the body
  • Diests - acknowledging a deity but rejecting immortality
  • Materialists - completely rejecting the idea of God

Al-Ghazali, the greatest Moslem theologian, fought against all these concepts and all orthodoxy took comfort from him. Even some Christian theologians were glad to find such an exposition of piety. He was so dominant that after this, with very few exceptions, philosophy was hidden, the pursuit of science waned and the mind of Islam more and more buried itself in the Hadith and the Koran. Al-Ghazali became a Sufi, a mystic, and with a radical distrust of human reason he changed the course of Islam to a more personal religion. (Ref. 49 )

International jewry

Jewry flowered in Moslem Spain in the first half of the century but persecution returned later. About the same situation occurred in France, with Jews killed and/or confined to ghettos late in the century.

Forward to A.D. 1101 to 1200

    Choose different region

  • Africa
  • America
  • Central and Northern Asia
  • Europe
  • The Far East
  • The Indian Subcontinent
  • The Near East
  • Pacific

Questions & Answers

Three charges q_{1}=+3\mu C, q_{2}=+6\mu C and q_{3}=+8\mu C are located at (2,0)m (0,0)m and (0,3) coordinates respectively. Find the magnitude and direction acted upon q_{2} by the two other charges.Draw the correct graphical illustration of the problem above showing the direction of all forces.
Kate Reply
To solve this problem, we need to first find the net force acting on charge q_{2}. The magnitude of the force exerted by q_{1} on q_{2} is given by F=\frac{kq_{1}q_{2}}{r^{2}} where k is the Coulomb constant, q_{1} and q_{2} are the charges of the particles, and r is the distance between them.
Muhammed
What is the direction and net electric force on q_{1}= 5µC located at (0,4)r due to charges q_{2}=7mu located at (0,0)m and q_{3}=3\mu C located at (4,0)m?
Kate Reply
what is the change in momentum of a body?
Eunice Reply
what is a capacitor?
Raymond Reply
Capacitor is a separation of opposite charges using an insulator of very small dimension between them. Capacitor is used for allowing an AC (alternating current) to pass while a DC (direct current) is blocked.
Gautam
A motor travelling at 72km/m on sighting a stop sign applying the breaks such that under constant deaccelerate in the meters of 50 metres what is the magnitude of the accelerate
Maria Reply
please solve
Sharon
8m/s²
Aishat
What is Thermodynamics
Muordit
velocity can be 72 km/h in question. 72 km/h=20 m/s, v^2=2.a.x , 20^2=2.a.50, a=4 m/s^2.
Mehmet
A boat travels due east at a speed of 40meter per seconds across a river flowing due south at 30meter per seconds. what is the resultant speed of the boat
Saheed Reply
50 m/s due south east
Someone
which has a higher temperature, 1cup of boiling water or 1teapot of boiling water which can transfer more heat 1cup of boiling water or 1 teapot of boiling water explain your . answer
Ramon Reply
I believe temperature being an intensive property does not change for any amount of boiling water whereas heat being an extensive property changes with amount/size of the system.
Someone
Scratch that
Someone
temperature for any amount of water to boil at ntp is 100⁰C (it is a state function and and intensive property) and it depends both will give same amount of heat because the surface available for heat transfer is greater in case of the kettle as well as the heat stored in it but if you talk.....
Someone
about the amount of heat stored in the system then in that case since the mass of water in the kettle is greater so more energy is required to raise the temperature b/c more molecules of water are present in the kettle
Someone
definitely of physics
Haryormhidey Reply
how many start and codon
Esrael Reply
what is field
Felix Reply
physics, biology and chemistry this is my Field
ALIYU
field is a region of space under the influence of some physical properties
Collete
what is ogarnic chemistry
WISDOM Reply
determine the slope giving that 3y+ 2x-14=0
WISDOM
Another formula for Acceleration
Belty Reply
a=v/t. a=f/m a
IHUMA
innocent
Adah
pratica A on solution of hydro chloric acid,B is a solution containing 0.5000 mole ofsodium chlorid per dm³,put A in the burret and titrate 20.00 or 25.00cm³ portion of B using melting orange as the indicator. record the deside of your burret tabulate the burret reading and calculate the average volume of acid used?
Nassze Reply
how do lnternal energy measures
Esrael
Two bodies attract each other electrically. Do they both have to be charged? Answer the same question if the bodies repel one another.
JALLAH Reply
No. According to Isac Newtons law. this two bodies maybe you and the wall beside you. Attracting depends on the mass och each body and distance between them.
Dlovan
Are you really asking if two bodies have to be charged to be influenced by Coulombs Law?
Robert
like charges repel while unlike charges atttact
Raymond
What is specific heat capacity
Destiny Reply
Specific heat capacity is a measure of the amount of energy required to raise the temperature of a substance by one degree Celsius (or Kelvin). It is measured in Joules per kilogram per degree Celsius (J/kg°C).
AI-Robot
specific heat capacity is the amount of energy needed to raise the temperature of a substance by one degree Celsius or kelvin
ROKEEB
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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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