How are federal and confederal systems of government different

In a Federal System of government, there is a strong central government which has the majority of the power.

In a Confederal System, the central government is quite weak and the entities that making up the confeseration, such as a states, are the ones with all the power.

"germany's geographic location was an advantage when it was on the offensive in the war because it was situated next to an extremely wide river, the rhine, which was difficult for the allies to cross."