Which federal agency is known as the nation's preeminent "cryptologic organization"?

The answer to this question is that the National Security Agency is known as the nation’s preeminent “cryptologic organization”. The National Security Agency or NSA is an intelligence agency that is responsible in protecting the communication system of the country. Mostly of the workforce in the National Security Agency are comprised of engineers, scientist, security officers, mathematicians, and administrative assistants which works as a team and works under classified information field.  

d - failures.

the only attempted british colony in north america before 1600 was roanoke, virginia, which was a total failure. england claimed several areas, including newfoundland, but made no sustainable attempts to colonize them before 1600.

answer; caravan;