The 1842 coal mines act a. forbade the employment of women and boys under 10 years of age in the mines b. forbade the use of horses and mules in the mines c. required children to pass a test before being hired to work in the mines d. required all miners to wear helmets

The picture below shows president richard nixon and the first lady standing before the great wall of china in 1972. they are smiling - as are the chinese with them. when this picture was shown on american television, americans were aware that it was a historic moment. what are two reasons why this moment was important for both china and the united states?