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A Trojan Horse virus spreads through anyway possible, but the main way to get a Trojan horse is by downloading un-legitimate programs from the internet. What does a Black Trojan horse do: enters and exit's your computer undetected bringing in viruses from a unknown source.
No one yet knows just when men began to make fire themselves, but scientists believe that it happened very early in history. They say that it must have come about as a result of the observation of sparks. Hot sparks blown by the wind spreads forest fires, and early toolmakers must have noticed that the rocks they chipped at often threw off similar sparks. It's likely that these first artisans obviously began to select those rocks that would make sparks every time they were struck. A very common mineral, iron pyrites, will give a shower of sparks when hit with another stone. Flint, the basis for many early tools, does this even better. This method of producing sparks by striking stones together is known a percussion, and all that is needed to start a fire is to direct the sparks to a pile of tinder made of dry leaves and tiny scraps of wood.
The hypocaust is underneath the floor and pipes raise the floor so that the heat can pass through the room or building. Slaves put water or coal into the furness so that the hypocaust can get hotter or colder.
civilization largely travels through trade, travel and warefare. I will let you look it up instead of spendiing my time typing it.
Homogeneous
The process by which a feature spreads from one place to another
Spreads, scatters, squanders
How a culture spreads it's know ledge and skills from one area to another is known as
malignant
diffusion
malignant
Islam is a religion that affects all our life aspects, improves morals, calls for work, encourages thinking and research and improving modes of life, builds up solidarity and good societies, and spreads the culture of peace, love, and accepting the other. In this sense Islam religion leads to civilization. In this sense it was the Islamic civilization that was the cradle for the following European civilization.
Same relation as the relation between Christianity and the western civilization. Or the Vedic dharma and the Hindu civilization. While Islam has spread by invasion, force, and mass production of children and forcing Islam on the children, the Vedic dharma survives and spreads since millenniums by free will. 1000 years of Islamic onslaught could not kill this Vedic dharma.
It spreads out and will, over time, condense and probably form another star or planetary system.
In an ancient civilization, although also true for any other civilization, writing spreads knowledge in several ways. For one thing, it is simply an additional source for knowledge; that is, it is additional to oral sources. For another thing, it is a long-lasting source for knowledge: it preserves and thus passes down knowledge from one generation to another.