Unrestricted submarine warfare, which became prominent in World War I, meant that submarines could sink any time of vessel at any time without warning. Before this, they had to surface first and place crews on lifeboats.
Allowed for echolocation and underwater discoveries such as study of marine life
the Triple Entente - France, Russia, and Great Britain.Jun 30, 2014
Although there definitely existed "robber barons" who took advantage of a delicate and changing situation, most of these men were mostly well-meaning people who wanted to capitalize on an opportunity, and whose actions increased the welfare of many Americans.
The monarchy undertakes constitutional and representational duties
