On March 17, 9,000 British troops and Loyalists began a chaotic ten-day evacuation of Boston aboard 120 ships. Soon after, Washington entered the city with 500 men, with explicit orders not to plunder the city. He ordered vaccinations against smallpox to great effect, as he did later in Morristown, New Jersey.
Responding to Grimké's comments about his proposals, on March 18, 1915, Woodson wrote: I am not afraid of being sued by white businessmen. In fact, I should welcome such a law suit. It would do the cause much good. Let us banish fear. We have been in this mental state for three centuries. I am a radical. I am ready to act, if I can find brave men to help me. His difference of opinion with Grimké, who wanted a more conservative course, contributed to Woodson's ending his affiliation with the NAACP.
At the age of 19, Wong was cast in a supporting role as a scheming Mongol slave in the 1924 Douglas Fairbanks picture The Thief of Bagdad. Playing a stereotypical "Dragon Lady" role, her brief appearances on-screen caught the attention of audiences and critics alike.
The Tri-State Tornado of Wednesday, March 18, 1925 was the deadliest tornado in United States history. It was also the most exceptional tornado during a major outbreak of at least 12 known significant tornadoes, spanning a large portion of the Midwestern and Southern United States. This one tornado alone inflicted 695 fatalities, more than twice as many as the second deadliest, the Great Natchez, Mississippi Tornado.
The IPO took place on March 18, 2008. Visa sold 406 million shares at US$44 per share ($2 above the high end of the expected $37–42 pricing range), raising US$17.9 billion in the largest initial public offering in U.S. history.
On 18 March 2014, at GDC, president of Sony Computer Entertainment Worldwide Studios Shuhei Yoshida announced their new virtual reality technology dubbed Project Morpheus, and later named PlayStation VR, for PlayStation 4.The headset brought VR gaming and non-gaming software to the company's console. According to a report released by Houston-based patent consulting firm LexInnova in May 2015, Sony is leading the virtual reality patent race. According to the firm's analysis of nearly 12,000 patents or patent applications, Sony has 366 virtual reality patents or patent applications. PlayStation VR was released worldwide on 13 October 2016.