They were afraid of large numbers of Jews coming in from (in the case of the St. Louis) Germany. 900 people is a lot of people but it would only be the tip of the iceberg if people were allowed to cross the Atlantic and go into the United States. There was a quota of how many people could come in and the US wanted to keep to the quota system.
The United States (at the time of the St. Louis sailing) was neutral, so they also didn't want to endanger that neutrality.
D c are correct .................
I can't really answer this for you because this is YOUR opinion but here's what I would've said; Yes, I would have because of the extreme hardships the militia men had to go through. During that winter, many soldiers had suffered the consequences of going through and not quitting the journey but if I were one of them, I would've quit. Even though I know that I have to fight for the country, I would not have been able to go through with the lasting consequences. Men had to walk through treacherous snow which also was cold and wet, this was not a good environment for soldiers to be in.
The Mongols. The modern Mongols, who are an Inner Asian rather than a Siberian people, are the descendants of the famed Empire Builder Chingiz (Genghis) Khan. As such, they have played a more prominent role in world history than any other people of North or Middle Asia.