Aid is the lowest level of friendly relations between countries Aid is the giving of supplies and money and sometimes men to help a nations economy
A treaty is the 2nd level of friendly relations a treaty is an agreement to not fight each other it also may involve giving each other aid in maritime a treaty may also be used to solve the war it involves the looser agreeing to terms made by the other side.
An alliance is the strongest bond between countries when a country has an alliance the other will offer protection and military aid and political support in wartime when a member of an alliance is attacked the others will jump in to help sending the full strength of their military and launching them into the war.
A treaty is the 2nd level of friendly relations a treaty is an agreement to not fight each other it also may involve giving each other aid in maritime a treaty may also be used to solve the war it involves the looser agreeing to terms made by the other side.
An alliance is the strongest bond between countries when a country has an alliance the other will offer protection and military aid and political support in wartime when a member of an alliance is attacked the others will jump in to help sending the full strength of their military and launching them into the war.