Why were bill watterson's comic's a great influence to other comic artists.

His comics were praised for being whimsical but also literary. It shifted between reality and a child's fantasy. He also added memorable and lovable characters that could be recognized due to his popularity (Calvin and Hobbes was featured in over 2,500 papers during its prime). He added satire and playful humor to many of his comics, which made them only that much more appealing.
He was also known for urging comic strip artists to print their comics outside of newspapers due to demands given by editors and syndicates. 

B. looseimpressionist painters tried to stay far away detailed, realistic and smooth looks for paintings.

Dramatic movement i think