Answer:
D. 1949
Explanation:
Each of these 3 events took place in the year 1949.
1. The soviet union tested it's first atomic bomb on the 29th day of August 1949 in what is now the modern day kazakhstan.
2. NATO was formed on the 4th of April 1948. It was formed by 12 founding members of alliance.
3. This is also known as the greta retreat. Also happened in 1949. The leaders of the Kuomintang fled to Taiwan.
Kansas, situated on the American Great Plains, became the 34th state on January 29, 1861. ... This quickly led to violence,and the territory became known as “Bleeding Kansas.” Kansas has long been known as part of America's agricultural heartland, and is home to the major U.S. military installation Fort Leavenworth.
I believe the answer is the first one.
