The answer to your question is D (the last)
To protect the lines of supply between New Orleans and Texas
It was that "Flat land with poor drainage led to salinization from irrigation waters," that was a factor in the decline of Sumer, since this led to a build up of salt in the soil, which greatly reduced agricultural output.
This is true. Due to the depression the western government started taking measures that would help the citizens.
<h3>The great depression</h3>
This was a period in the 1920s that had the United States in a state of economic down turn. Lots of people lost their jobs at this time and people were unemployed.
To take care of the citizens the governments had to start several social programs that would alleviate the hardship.
Read more on the great depression here:
brainly.com/question/441267
