Sand can be used for glass.
**assassinated on Friday, November 22, 1963, at 12:30 p.m.
** while riding in a presidential motorcade through Dealey Plaza.
** The driver of the president’s Lincoln limousine, with its top off, raced to nearby Parkland Memorial Hospital, but after being shot in the neck and head, Kennedy was pronounced dead at 1 p.m.
** was 46 years old
**
I believe the first answer is The Turks captured Constantinople closing the path to the Silk Road. The second is Europeans developed the economic system of mercantilism and needed reserves of gold and silver. Hope I helped!