Why was it important for the americans to win the support of france during the revolution?

We had lack of supplies going into the war. So, getting support from France and other countries would help our military in the fight against Great Britain.

Also, France had more experience fighting, and therefore, help train our soldiers.
 
Americans also did not have much of a navy. So, with over 10,000 French soldiers and 30,000 French sailors, the French help was very important to our military.

When we became allies with the French, it helped our trade.

When the French helped us, it opened doors for other countries to assist us 

the following best describes postwar era writers in their works:

progressive

many writers,authors,novelists,poets concentrated more on social art and social writing and stayed away from political writings.