"united States" is the country among the following choices given in the question that ranked seventh among the top 10 emitters. the correct option among all the options that are given in the question is the first option or option "A". I hope that this is the answer that you were looking for and it has helped you.
The European union can be called C) a federation.
Around 1066, The Normans conquered England under William the Conqueror.
The Norman conquest linked England tighter to Continental Europe, especially west Europe, and William the Conqueror, king of England, was technically the king of France's vassal, so his lands lodged in a region of France bigger than the royal realm. Besides, he got help from King Henry I of France to remain as ruler.
Thereby the answer is (C) & (D), due The Normans that invaded England came from Normandy in Northern France, although they were originally from Scandinavia, and a previous French King conceded some land to the Vikings in Northern France earlier.
Production of more food--the system allowed for more food to be produced which fed the workers in an industrial economy.
The 'four-field system' rotates crops between the 4 fields no longer needing to keep one empty because one of the crops would replenish the field with nutrients while the others take nutrients away from the fields. <span />