During the late 18th century which country gave the most support to the american colonies

Netherland along with France gave the most support to America colonies in the late of 18th century.

Explanation:

In the late 18th century, revolutionary war was fought. In this war, many European countries helped the American colonists. France, Netherland, and Spain were the primary allies. Other allies were Russia, Portugal, Denmark, and Norway. Netherlands along with France provided the main support. There were four major reason to help American colonists which are given below:

i)British was their common enemy.

ii)France and Spain had fought war of seven years against Britain.

iii)Personal gain  

iv)Belief in freedom    

yes he can but hardly

explanation:

confedracy

supported slavery

upheld the supremacy of federal laws

believed states should be able to nullify federal laws

union

wanted to abolish slavery

supported high tariffs

upheld the supremacy of federal laws