The answer to this question is ACtive adaptaion
Learning and reasoning gives humans the ability to analyze our surrounding and leverage for our own benefit.
This capability will make us able to adapt to the environment that we lived in and help to ensure our survivability before we pass our gene to the next generation.
If I understand your question correctly, you want to know who the last (as of today) "white" president was of the US? It was George W. Bush, president until 2009.
President Obama it the commander in chief today. Commander in chief = President.
The correct answer to this is A) the Missouri compromise because in 1820 a dispute erupted over the extension of slavery in Missouri Territory. Clay helped settle this dispute by gaining Congressional approval for a plan called the "Missouri Compromise". It brought in Maine as a free state and Missouri as a slave state (thus maintaining the balance in the Senate, which had included 11 free and 11 slave states), and it forbade slavery north of 36° 30' (the northern boundary of Arkansas and the latitude line) except in Missouri.
Hope this helps :)