Answer: it’s that it continued
Explanation: it went across the nation, meaning it was so successful that it happened 
 
        
                    
             
        
        
        
Helps the reader memorize it and the listener to get drawn in 
        
             
        
        
        
A group of words that includes a subject and a verb but does not express a complete thought is called subordinate clause, or also referred to as dependent clause. This group of words is not a sentence and can't stand alone as a sentence. Example : Because I can't wait for the bus; Until the sun rises.
 
        
                    
             
        
        
        
Answer:
A. attach
Explanation:
In this sentence, "tack" is a verb, so attach is the best word since it is also a verb and it is a synonym for tack.