div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: · SYNOPSIS Social Studies classes Grades 6 to 10 After the removal of the original forest cover the plains adj acent to the Great Lakes and the St Lawrence River became a rich src=https:reader034vdocumentsusreader034viewer20220430215f3cefee42f54442186fdf76html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 2button div class=ts-image amp-img class=ts-thumb alt=Page 2: · SYNOPSIS Social Studies classes Grades 6 to 10 After the removal of the original forest cover the plains adj acent to the Great Lakes and the St Lawrence River became a rich src=https:reader034vdocumentsusreader034viewer20220430215f3cefee42f54442186fdf76html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdiv