<span>In the year 1784, Thomas Jefferson (third president of the United States of America) directed in the state of Virginia, USA the first ever controlled excavation of an olden burial mound. This is known to be the first scientific archaeological excavation in history. </span>
Federalism is a form of government that divides sovereign power across at least two political units. In the context of the United States, power is divided among the national and state governments so that each government has some independent authority.
