What is the most populated region of canadaand it has farms factories in niagara falls

On the graph, the bottom horizontal line represents

What initiatives were taken by americans to benefit the war effort? 1. americans planted home gardens to ration food for the troops. 2.american charities were established to provide aid to factory workers. 3.american companies joined together to make products more cheaply. 4.americans created clubs for promoting weapons to be used in the war.

What were some effects in world war 1 in europe ? ( and only in europe)