Eniac was the first instance of what?

ENIAC (Electronic Numerical Integrator And Computer) was the first large-scale computer to run at electronic speed. Completed in 1945, it was also one of the earliest electronic computers made. This early computer was primarily designed to calculate artillery firing tables for the United States Army's Ballistic Research Laboratory. It was also able to solve a large class of numerical problems.

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step-by-step explanation:

1400 - 15% to get the answer.

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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.