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? Robert Oppenheimer Leslie R. Groves James B. Conant Vannevar Bush Robert Oppenheimer Leslie R. Groves James B. Conant Vannevar Bush ANSWER DOWNLOAD EXAMIANS APP
Inventions When was the first lawn mower invented? 1835 1849 1854 1830 1835 1849 1854 1830 ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade was the telegraph invented? 1810s 1890s 1840s 1870s 1810s 1890s 1840s 1870s ANSWER DOWNLOAD EXAMIANS APP
Inventions It travels over land and water. Who invented the HOVERCRAFT? S. Sperrow T. Henman O. Stricheg C. Cockerell S. Sperrow T. Henman O. Stricheg C. Cockerell ANSWER DOWNLOAD EXAMIANS APP
Inventions What drink was invented by Charles Leiper Grigg in 1929? Hawaiian Punch Yoo-Hoo 7-Up Pepsi Hawaiian Punch Yoo-Hoo 7-Up Pepsi ANSWER DOWNLOAD EXAMIANS APP
Inventions When were blue jeans invented? 1870s 1860s 1850s 1900s 1870s 1860s 1850s 1900s ANSWER DOWNLOAD EXAMIANS APP
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