In which year did the united states detonate the first nuclear weapon?
a. 1942
b. 1945
c. 1949
d. 1953

In 1945, on Area 51, then later  in Hiroshima, and Nagasaki.

The league of nations was found in 1919 to keep peace after world war l.but it failed to prevent world war ll in 1939,so in 1945 the nations of the world set up a new organization,the united state (un).since then, the un has encouraged international cooperation and worked to resolve conflict

The answer is william henry harrison pursued and defeated british forces retreating into canada.