Who is Curley and what do we learn about him from the workers ?

In what way do you think it would be difficult to live next to the united states

He had fished in the river since ten years and he was a good fisherman. he know where to found the slim sliver chilwa fish, a big beautiful mahseer and the long moustache singhara. he know where the river was deep but where it is shallow; he knew which baits to use - which fish like worms and which liked gram. edit the above

Which translations would fit in the blank in order to most effectively link reasons to evidence a: for example b: similarly c: however d: on the other hand