Britain, Spain, and France were potential enemies.
Answer:
Walt Whitman publishes Leaves of Grass on July 4, 1855. Abe Lincoln become president on March 4, 1861 – April 14, 1865.
The Preparedness Movement was a campaign led by former Chief of Staff of the U.S. Army Leonard Wood and former President Theodore Roosevelt to strengthen the U.S. military after the outbreak of World War I.
Because after World War 2 the baby boomers came about, causing America's population to incease higher than ever . More population equal a greater consumption.
They were too large and expensive - typically a computer would fill a room and would have to have its own power supply.
