Inventions When was barb wire patented? 1840 1900 1895 1874 1840 1900 1895 1874 ANSWER DOWNLOAD EXAMIANS APP
Inventions This African-American woman physical therapist worked with soldiers disabled in World War II. She invented a device that helped the disabled to eat by delivering food through a tube to a mouthpiece. Mae Jamison Bessie Blount Marjorie Joyner Beulah Henry Mae Jamison Bessie Blount Marjorie Joyner Beulah Henry ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Bakelite? Leo Hendrik Baekeland Henry Ford Roy Plunkett Charles Goodyear Leo Hendrik Baekeland Henry Ford Roy Plunkett Charles Goodyear ANSWER DOWNLOAD EXAMIANS APP
Inventions The Manhattan Project was started by President Roosevelt in 1942 to ensure that the U.S. beat the Germans in developing a nuclear bomb. Whom did Roosevelt appoint as scientific head the Manhattan Project? Leslie R. Groves Vannevar Bush Robert Oppenheimer James B. Conant Leslie R. Groves Vannevar Bush Robert Oppenheimer James B. Conant ANSWER DOWNLOAD EXAMIANS APP
Inventions When was the first Lionel trains manufactured? 1920 1944 1901 1890 1920 1944 1901 1890 ANSWER DOWNLOAD EXAMIANS APP
Inventions What charge card, developed in 1950, was the first to be accepted nationally in the US? Diner's Club MasterCharge Visa Discover Diner's Club MasterCharge Visa Discover ANSWER DOWNLOAD EXAMIANS APP
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