Which of the following was NOT a new technique used in naval warfare during the Civil War? a. the inclusion of iron plating

b. the use of steam engines

c. the uses of sails to power ships

d. changes to the type of cannons used on ships

b. the use of steam engines

its b they use steam engines

Explanation:

c.) the country needed a stronger central government.

answer is b.

  it is always the best policy to have good communication and good relations between individuals and, specially, between leaders of the countries. for this purpose, among others, there is a common place, the united nations, where the representants can present his and learn about the other country's policies.