Answer:
The Crusade was led by three European monarchs, hence its other name of 'the Kings' Crusade'. The three leaders were: Frederick I Barbarossa, King of Germany and Holy Roman Emperor (r. 1152-1190 CE), Philip II of France (r. 1180-1223 CE) and Richard I 'the Lionhearted' of England
The Louisiana Purchase was a land deal between the U.S. and France. The U.S. bought over 800,000 square miles along the Mississippi river(West) for $15 million dollars. This was so important because it expanded the U.S. almost half their size.
It was known as “The Great War”
The best option regarding Lyndon Johnson's actions as president would be that "<span>He tried to continue Kennedy's policies," since he turned out to be a highly progressive President. </span>