Possibly: What is best for my customers? There needs and necessities.
This question is based off of personal experience. You could talk about choosing to do thus-and-such instead of another thing.
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#1) Which waterways are considered important for trade in southwest asia?
Answer: Western Asia is located directly south of Eastern Europe. The region is surrounded by seven major seas; the Aegean Sea, the Black Sea, the Caspian Sea, the Persian Gulf, the Arabian Sea, the Red Sea, and the Mediterranean Sea. And the rivers Euphrates River, Tigris River, Suez Canal, and the Jordan River. The rivers of Southwest Asia (the Middle East) are important because much of this region of the world is dry and desert or semi-desert.
Answer:
The main contribution was the stock market crash of 1929 that made the United States fall into the Great Depression.