The Greeks were able to regroup. To defend against the Persians, Athens formed the Delian League, making the city-state the most powerful in Greece. In response to the growing power of Athens, the Spartans formed their own league, and the two powers went to war.
        
             
        
        
        
Answer:  I believe that after declaring independence in 1776, Congress had tried to unite the states under one nation government. Members of Congress were scared that a strong central government would crush the rights they were fighting to preserve. To solve there problem was a plan of government called the Articles of Confederation
 
        
             
        
        
        
Slavery forbidden in the Northwest Territory. Slavery and involuntary servitude were forbidden in theNorthwest Territory, thereby making the Ohio River a natural dividing line between the free and slave states of the country. Unanimous consent from the states was required for the Northwest Ordinance to be passed.
        
             
        
        
        
Answer:
the printing press
Explanation:
The printing press made maps and books more affordable and readily available in Europe.
The printing press using movable type was innovated by Johannes Gutenberg in 1440 made books and maps cheaper to produce and also helped people share knowledge quickly and reach a wider audience.
In addition, it encouraged more people to write and share their knowledge.