In this article we discuss Leibniz algebra expansions from low dimensional solvable Leibniz algebras (?) to high dimensional solvable Leibniz algebras (?), such as two-dimensional, three-dimensional solvable Leibniz algebras, four-dimensional nilpotent Leibniz algebras, and two types of unique n-dimensional solvable Leibniz algebras and so on. We also discuss Liezation of the four-dimensional nilpotent Leibniz algebras, properties of the two n-dimensional solvable Leibniz algebras, and the relationship between (?) and (?). |