Answer:
What most people don't know is that ancient Nubia was the site of highly advanced black African civilizations that rivaled ancient Egypt in wealth, power and cultural development. In fact, Nubian kings ruled over Egypt as pharaohs for nearly 100 years.
They started to create more safety precautions. Airport security has been upgraded to extremes with scanners and xrays. Border security has also been emphasized on. The US has taken countless steps, alot of which are directed towards defence
He was originally negotiating with for access to the mouth of the Mississippi River in New Orleans. France was low on money at the time, and in need of a lot of money to fund more of Napoleon's battles - so France offered their ENTIRE Louisiana Territory instead of just New Orleans for only three cents an acre
gunpowder
The invention of gunpowder.
This period is also known as the medieval period and is known for the various discoveries and inventions made during this age.