The March for Life has grown to participation by about 1 in every 400 Americans from East of the [[Mississippi River]].<ref>The population East of the Mississippi River is estimated to be about 178 million.</ref> Additional people from across the nation and out West also travel to attend the March for Life. In Canada, a March for Life is held on May 12th each year. | The March for Life has grown to participation by about 1 in every 400 Americans from East of the [[Mississippi River]].<ref>The population East of the Mississippi River is estimated to be about 178 million.</ref> Additional people from across the nation and out West also travel to attend the March for Life. In Canada, a March for Life is held on May 12th each year. |