What is the answer to the brain teaser with GESG?

What impact did the monopoly of railroads have on the development of the transportation industry in the 19th century? In you spy spooky night where is the Knock? What words can you spell with the letters m h y b r l g h t? What was the first Malibu barbie-doll's name? What to write on a post card to a boyfriend? Where did rock paper scissors come from? What is diarised? What is a synonym for the word attraction? What is the six letter word for narrow necked bottle? What are the 10 most popular Monopoly game pieces? How Much did a New Cricket Doll Cost in 1986? Can you list verbs that begin with the letter 'I'? What words can you spell using the letters t e e m i g r a? What is the six letter word for hot and ends with en? What are some seven letter words with 1st letter Z and 2nd letter I and 5th letter I and 7th letter G? Alliteration's starting with j? A villain starting with the letter R? What abilities does Cairn Wanderer possess that make it a formidable creature in the game? Words that have kn in them? What toy did John wright invent?