The United States provided critical aid to Great Britain and the Soviet Union.
 
        
             
        
        
        
The military plans laid before World War I presupposed a major war between the countries which were tied together with alliances.  Because the Triple Entente had Britain, France and Russia as allies, Germany thought if a war began it would need to fight on two fronts -- west and east.  So German Field Marshall Alfred von Schlieffen drew up war plans that said attack France first, quickly, and then hold that territory while deploying forces to contend with Russia in the east.   So when Germany declared war on Russia in 1914, the first thing it did was to go and attack France.  Thus the war spread and became instantly a more global conflict.
National leaders in politics and the military need to learn caution when dealing with alliances and when committing themselves to military action. Restrained, limited military actions are preferable to the all-out plunging into war that was seen in the outbreak of World War I.   Diplomacy should be given its best chance to work before resorting to military options -- even if military options have been pre-planned. 
        
             
        
        
        
Answer:
Pues es simple, a medida que fue creciendo y se fue desarrollando el mercado agrícola y el comercio en el siglo XV, las comunidades que vivían de esto se sintieron más cómodas y fueron capaces de asentarse como tal y crear familias en esos espacios.
¿Que cómo afecto esto la demografía? Recuerda que la demografía es el estudio de la población con respecto al territorio, entonces, si decimos que las comunidades que vivían ahí se asentaron y crearon familias, quiere decir que la población creció y las estadísticas demográficas cambiaron.
Explanation:
 
        
             
        
        
        
Feudalism started around 8th century or 850 AD to be exact. Based from all the choices given, there is no right answer. So probably the closest is 900 A.D so I would have to go with that. But if there is a choice that is 850 A.D, that is the correct answer. I hope this answer helped you. 
        
             
        
        
        
Answer:
B is the answer because why would they