They did this because the soil was more fertile while it got harder to farmer further West
Trenches were common throughout the Western Front.
Trench warfare in World War I was employed primarily on the Western Front, an area of northern France and Belgium that saw combat between German troops and Allied forces from France, Great Britain and, later, the United States.
Although trenches were hardly new to combat: Prior to the advent of firearms and artillery, they were used as defenses against attack, such as moats surrounding castles. But they became a fundamental part of strategy with the influx of modern weapons of war.
Long, narrow trenches dug into the ground at the front, usually by the infantry soldiers who would occupy them for weeks at a time, were designed to protect World War I troops from machine-gun fire and artillery attack from the air.
hope this helps
James Willard Schultz's book "Bird Woman: Sacagawea's Own Story", first published in 1918, is an adventurous account on Sacagawea's life story, mainly her heroic role in the Lewis and Clark expedition. The novel is filled with great feats and amazing records of that moment in time, all based on a real-life story. However, there are a couple of factors that might naturally affect the book's reliability. The stories told by Schultz were passed down in the common Native American tradition of oral storytelling; in this case, Schultz learned them from Earth Woman who, as a child in the early 1800s, heard these stories being told by Sacagawea in her father's lodge. The passing of time and the oral telling and re-telling of the stories can naturally disrupt many of the details, altering the original historical facts. Another factor to be considered when speaking of the book's reliability is to evalute how much of the story got "lost in translation" - that is, how each storyteller's individual perspective changed the story, as well as how the translation of it from one language to another affected the original meaning.
slavery helped improve human courage , strength and will power
