In a complex sentence, the role of the subordinating conjunction and the dependent clause is to establish a time, a place, a reason, a condition, a concession, or a comparison for the main clause. The subordinating conjunction provides the bridge between the main clause and the dependent clause.
The definition of Act of Supremacy in the law of the United States, as defined by the lexicographer Arthur Leff in his legal dictionary is: An English statute of 1558 establishing the supremacy of the Crown in ecclesiastical matters.
Define Supremacy Clause U.S. Constitution Article VI, cl. 2. The Constitution and law of the US (federal statues) and treaties made shall be the Supreme Law of the land and judges in every state shall be bond thereby anything in Constitution or laws of any state to the contrary notwithstanding.