Answer:
the second one about forts along rivers
Explanation:
<span> "No taxation without representation."</span>
Changed life more drastically. AKA the steam engine.
1st answer: Great Britain, France, Russia and Spain.
2nd answer: John Quincy Adams resolved this through the Treaty of 1818 where the border of the United States and Canada was established at the 49th Parallel.
They think this due to finding fossils, artifacts, footprints, etc in africa leading into south america.