The Battle of Antietam /ænˈtiːtəm/, also known as the Battle of Sharpsburg, particularly in the South, was fought on September 17, 1862, near Sharpsburg, Maryland and Antietam Creek as part of the Maryland Campaign.
Unrestricted submarine warfare is the practice of using submarines to attack and sink all forms of enemy shipping, whether they are military or civilian. It is most closely associated with the First World War when Germany's decision to use USW brought the US into the war and led to their defeat.
Answer:
California’s Central Valley
Explanation:
The Excerpt explained the disaster caused by the Dust Bowl, in which many people migrated from their homes and farms in and around places like Oklahoma, Arkansas, Missouri, Iowa, Nebraska, Kansas, Texas, Colorado, and New Mexico.
It was recorded that about 3.5million people migrated from the aforementioned areas, and majority of them, moved to the California Central Valley, with about 86,000 people reported to have relocated to California in the first year after the Dust bowl.
And based on statistics of the Bureau of Agricultural Economics, it was recorded that about 116,000 families eventually arrived in California in the 1930s.
Hence, the most affected by the migration spawned by the environmental disaster highlighted in the passage is California’s Central Valley.