D. The Grand canyon's layers get older from bottom to top
The deeper you go, the older the layer
The French and Indian War began in 1754 and ended with the Treaty of Paris in 1763. The Great Britain gained territories in the North American, but disputes about policies and paying war's expenses led to colonial discontent. Taxation was created to pay back the debts. Stamp Act, Tea Act and Townsend Act were introduced. This ultimately led to the American Revolution.
Truman presents American policy as both offensive and defensive. Because he makes it known to the Soviets that America is standing up against Communism, Thus by showing the Soviets what America is really made of. He uses the word contain to address how communism is. He doesn't want communism to die or grow rapidly, But he wants it to stay at the level it currently is at shortly after WWII.
Hope this helps! :)
