Your answer is A,B, and C love!
hope this helps could not find any other leaders but found this: The Lewis and Clark Expedition began in 1804, when President Thomas Jefferson tasked Meriwether Lewis with exploring lands west of the Mississippi River that comprised the Louisiana Purchase. Lewis chose William Clark as his co-leader for the mission.
Its sweden but norway is #2
B the Soviet Union collapsed and broke up into 15 independent states
