name one river on the medieval map
po river,seine river,rhine river,danube river
what is the feudal pyramid order
king
lord
knights
serfs
what did knights allow peasants to do when the knight was at war
farm the knights land
the first to introduce GPS guidance in tractors
john deer
what is one military thing that changed the world
anything that is military related
name a body of water
mediterranean sea, black sea,north sea,atlantic ocean
what do the the lords need to be to be a lord
male
what did peasants have to provide for the knights
food protection and other payment
the technology that uses thermal imaging
drones
what were airplanes mostly used for
spy on enemies
name a city on the map
rome london paris constantinople hamburg
the lord must own
land
what did each manor have to have
a large house or castle
the method that helps reduce water scarcity
irrigation
what was added on to airplanes later on
machine guns
name a mountain on the map
carpathian pyrenees alps
what does the lord need to be a member off
the noble class
how much land did the lord keep for himself
1/3 to 1/4
the technology that measures the moister content and temperature of the soil and air
agriculture sensors
what was the largest german plan
the zebbelin staaken
name a empire from the map
spain,holy rome,britain,france,papal
what do lords protect
his vassal and his property
why did the peasant have to farm the knights land
the knight was of at war
makes the practice of farming more accurate and controlled when it comes to the growing of crops and raising live stock
precision agriculture
what gas did the germans use
poison gas