The French concentrated in exploring Canada because they already had forts in it in Quebec and in other parts of Canada, also there wasn't too much fighting over Canada except for the British so they decided to explore Canada.
The issues are "Navies and fishing rights on the Great Lakes".
Hope this helps !
Photon
Argentina, Belgium, Bolivia, Brazil, British Empire, Chile, Republic of China, Colombia, <span><span /><span><span><span> United Kingdom,</span><span> Australia,</span><span> Canada</span><span>, India,</span><span> New Zealand</span><span>, South Africa</span></span>,
</span><span /><span /><span> Cuba</span><span>, Czechoslovakia, Germany,</span><span> Denmark</span><span>, El Salvador, </span><span>France, </span><span>Greece</span><span>, Guatemala,</span><span>Haiti,</span><span> Honduras,</span><span> Kingdom of Italy, </span><span> Empire of Japan, </span><span> Liberia,</span><span> Netherlands,</span><span> Nicaragua,</span><span> Norway,</span><span> Panama,</span><span> Paraguay, </span><span> Persia,</span><span> Peru,</span><span> Poland,</span><span> Portugal</span><span>, Romania, </span><span> Siam aka Thailand, </span><span> Spain,</span><span> Sweden,</span><span> Switzerland,</span><span> Uruguay</span><span>, Venezuela,</span></span><span><span> Austria,</span><span> Bulgaria, </span><span>Costa Rica, </span><span> Finland, </span><span> Luxembourg,</span><span> Albania, </span></span>