Answer:
Some 8,000 years ago people living around the Aegean Sea began to spread into southern Europe, bringing their farming skills into a continent that had only seen hunter-gatherers for tens of thousands of years, according to the paper. ... This DNA confirmed that these early farmers were moving themselves across Europe.
Answer: The U.S. Supreme Court case Marbury v. Madison (1803) established the principle of judicial review—the power of the federal courts to declare legislative and executive acts unconstitutional. The unanimous opinion was written by Chief Justice John Marshall.
Explanation: I learnt this already.