TASK DEFINITION: In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.
PROBLEM: A federation ( also known as a federal state ) is a political entity characterized by a union of partially self-governing provinces , states , or other regions under a central federal government ( federalism ) .

SOLUTION: A federation is a union of a number of self-governing states or regions , which are joined together under a central government .

PROBLEM: These territories ' legislatures , their Assemblies , exercise powers devolved to them by the Commonwealth ; the Commonwealth Parliament remains able to override their legislation and to alter their powers .

SOLUTION: The Commonwealth Parliament keeps the power to overturn territorial legislation and to give or take powers .

PROBLEM: The Dioscoreales are an order of monocotyledonous flowering plants in modern classification systems , such as the Angiosperm Phylogeny Group and the Angiosperm Phylogeny Web .

SOLUTION:
Dioscoreales is a botanical name for an order of flowering plants .