Here are the answers to our Readers’ Quiz in the March/April 2011 issue.

1.  Germany’s top secret system of decoding wireless messages during the Second World War was called Enigma.

2.  The American writer Jack London went to Canada’s Klondike in 1897 to prospect for gold.

3.  Experiments that led to the invention of the cardiac pacemaker were conducted at the University of Toronto.

4.  John McCrae, the author of the poem In Flanders Fields, was born in Guelph, Ont.

5.  A dispute between Canada and United States broke out in the 1860s on San Juan Island when an American farmer shot a pig belonging to a Hudson’s Bay Company post.