Tomas Alva Edison

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When Edison was 7 years old, his family moved to Port Huron, Michigan, where his father worked as ..... at the Fort Gratiot military post.

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Because of ....., Edison had difficulty following the lessons.

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From 1862 to 1868 Edison worked as ..... in the Midwest, the South, of Canada, and New England.

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By 1875 Edison asked his father to help him build ..... in Menlo Park, New Jersey.

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In 1879 he publicly demonstrated his ..... .

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The new lab in West Orange, New Jersey, employed about 60 workers and Edison tried to ..... .

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In 1913 Edison introduced ..... .

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He had great faith in ....., and valued long, hard work.