Answer:
This will be my last answer for now, but I'm positive the Louisiana Purchase occured between France and the US during Jefferson's Presidency. It was a really good deal for the US, because it was a lot of land for little money. However, envoys under Jefferson negotiated the deal without his direct approval, meaning Jefferson was forced to push for ratification.
Georges lemaitre came up with the big bang theory, and is a belief that the planet earth and the rest of the solar system came a bout with one loud bang.
<span>Increased free trade and communication between nations, along with increased access to technology, media, education, healthcare, consumer goods, and other resources.</span>