Nearly everyone knows this guy’s voice! he’s provided the insightful commentary to some legendary documentaries such as blue planet and life. his name is

His name is Sir David Attenborough.

Sir David Attenborough is an English broadcaster, writer and naturalist. He is greatly revered in his profession. He has been working in television in the field of natural history for over 60 years.

A. Pearl Harbor

Detail/context:

The conflicts that became World War II began in the 1930s with Japanese imperial aggression into Manchuria, to take over Chinese territory.  Beginning in 1938, the United States adopted increasingly severe trade restrictions against Japan in response.  When Japan moved into French Indochina in 1941, the USA froze all Japanese financial assets in the USA and placed an embargo on all oil and gasoline shipments to Japan.  The Japanese viewed the embargo as an act of war, and their attack against the US at Pearl Harbor, a naval base near Honolulu, Hawaii, was (from Japan's viewpoint) a response to US trade sanctions against them. 

The United States declared war on Japan on December 8, 1941 -- the day after the attack on the Pearl Harbor naval base.