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.
The earliest Chinese people did not have to worry about invasions from foreign countries because of their strong army and geography. The Chinese army present in ancient times were very strong and able to defend their lands. Chinese also build china wall in order to protect their lands from the invasion of other people. The geography of china also made difficult for the invaders to capture china.
The correct answer to this open question is the following.
You forgot to include the options for this question. However, we can answer the following.
When writing for social studies courses, the style that is required for formatting papers and citing sources is APA style.
We are talking about the American Psychological Association style of writing that established the basis for writing scholarly papers and reports that help researchers and students to order their ideas in a specific and clear way. APA style was created in 1929 to establish guidelines to use in scientific writing and to facilitate the comprehension of ideas. It gives the readers consistency and good formating of ideas.
