Misc: What caused the gremlins in the movie Gremlin to become evil?

Questions

On This Day In January 1886 - The Severn ______ Tunnel, Britain's longest, was opened.?

On This Day In January 1889 - The tabulating ______ was patented by Dr. Herman Hollerith. His firm, Tabulating Machine Company, later became International Business Machines Corporation (IBM.?

On This Day In January 1894 - ______ caused serious damage at the World's Columbian Exposition in Chicago, IL.?

On This Day In January 1900 - U.S. President McKinley placed ______ under military rule.?

On This Day In January 1900 - In South______ , General White turned back the Boers attack of Ladysmith.?