add a comma or semicolon if needed. otherwise, submit the text without any additional punctuation.\n\nthe…

add a comma or semicolon if needed. otherwise, submit the text without any additional punctuation.\n\nthe massive bluestones at stonehenge, a prehistoric monument in england, weigh four to eight tons apiece therefore, its quite astonishing that they were transported 170 miles from north wales nearly five thousand years ago.

add a comma or semicolon if needed. otherwise, submit the text without any additional punctuation.\n\nthe massive bluestones at stonehenge, a prehistoric monument in england, weigh four to eight tons apiece therefore, its quite astonishing that they were transported 170 miles from north wales nearly five thousand years ago.

Answer

Brief Explanations:

The two clauses are independent and connected by the conjunctive adverb "therefore." A semicolon is required before a conjunctive adverb that links two independent clauses.

Answer:

The massive bluestones at Stonehenge, a prehistoric monument in England, weigh four to eight tons apiece; therefore, it's quite astonishing that they were transported 170 miles from North Wales nearly five thousand years ago.