A unitary system of government, or unitary state, is a state governed by a single entity. A confederate government system is a relationship (sometimes loose) between a smaller number of political units. More of an agreement than anything. Finally a federal government is a system that divides power between a strong national government and smaller local government.
All three of these are completely different things.
During the winter, when there is no naturally grown food
Salt, also referred to as table salt or by its chemical formula NaCl, is an ionic compound made of sodium and chloride ions. All life has evolved to depend on its chemical properties to survive. It has been used by humans for thousands of years, from food preservation to seasoning.
