The foundations of modern Europe were laid in war. During the Crusades the whole of our continent was under arms. The struggle against the "infidel" was not simply a contest between one State and another, it was also a contest between Christian Europe and Mohammedan Asia. To be neutral in such a struggle would, according to the judgment of the time, have been equivalent to denying the faith. Within the European States, feudalism exerted no less a hindrance to the embodiment of the principle of neutrality. It would have been thought the gravest crime to loosen the bond of military service which compelled vassals to support with arms the cause of their feudal lords. It was only with the close of the age of feudalism, when Europe began to separate into three or four great monarchies, that neutrality in politics became a means of preserving the balance. In later times increasing COMMUNICATION and TRADE have above all contributed to the development of neutral laws. Without the sanction of these, a naval war between two great nations would have made any maritime trade all but impossible. Down to the close of the last century, however, neutral rights were dependent either on national statutes or on special treaties concluded between one State and another. The law only gained certain international importance towards the close of the eighteenth century through the NEUTRAL ALLIANCES which from time to time were contracted between States. In the period between 1780 and 1856 the subject gained an entrance by degrees among all maritime nations except England, who, independent of it, and always relying on her own strength, continuously sought to maintain unlimited domination at sea. In 1854-56 begins, so far as neutrality is concerned, a new era of international law. From this time the opposition which England raised to the practical application of neutrality in naval war may be regarded as having broken down. On the 30th of March, 1854, the French Minister of Foreign Affairs, Drouyn de Lhuys, published a communication, including, amongst other things, that the neutral flag during the then begun (Crimean) war, should be regarded as a protection for all neutral and hostile private property, except contraband of war. The same day the English Government gave forth in the _London Gazette_ a similar declaration, and on April 19th of the same year the Russian Government notified in the _Official Gazette_ of St. Petersburg that Russia would, during that war, act upon the same rules as the Allied powers. The provisions, which thus the Western powers on one side, and Russia on the other, believed themselves bound to observe towards neutral states, were at the Peace of Paris, 1856, solemnly ratified as International Law in force for all time. The principles which the plenipotentiary signatories of the Peace Treaty of Paris agreed upon in a proclamation of April 16th, 1856, are as follows:--