Answer:
a. Settlement: A definition of that in one word is <em>Establishment.</em>
b. Leif Erikson was an Icelandic explorer, and he was the first European to set foot on North America.
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The Gettysburg Address. President Lincoln delivered the 272 word Gettysburg Address on November 19, 1863 on the battlefield near Gettysburg, Pennsylvania.
The migrants gathered to begin their journey westward on the Oregon Trail in Independence, Missouri.
The Oregon Trail was a major route that people used to take when they wanted to move to the western area of the US. It started in Independence, Missouri and finished in Oregon City, Oregon. Many people traveled in wagon trains which went through six states such as Missouri, Kansas, Nebraska, Wyoming, Idaho and lastly Oregon.