30 points _ brain plz answer and dont be a meany i just need the answers 1. What is significant about the Louisiana Purchase?

2. When was the Louisiana Territory purchased?

3. Who was the significant Chief Justice of the Supreme Court who wrote the decision of Marbury vs. Madison?

4. What is the significance of Marbury vs Madison?

4.The significance of Marbury v. Madison was that it was the first U.S. Supreme Court case to apply "Judicial Review", and it allowed the Supreme Court to rule laws unconstitutional.

3.Chief Justice John Marshall 1 print : engraving. 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.

2.1803

1.The purchase doubled the size of the United States, greatly strengthened the country materially and strategically, provided a powerful impetus to westward expansion, and confirmed the doctrine of implied powers of the federal Constitution.

Explanation:

the exclusive possession or control of the supply or trade in a commodity or service.