Who was the first explorer to sail all the way down the mississippi river

Who was pancho villa? a u.s general who led american troops into mexico an american expert on tropical diseases a mexican rebel who attacked and burned a town in new mexico a leader of a hostile revolt in panama

Which best describes the impact of the crusades on european exploration?

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?