Oliver has to create a summary for his social studies class about the beginning of westward expansion in the United States. Which option describes something Oliver should include in his summary?

*
1 point
the main events leading to the expansion of the country
details about each passenger of the caravans that traveled west
Oliver’s opinion about whether it was a good idea to expand
subjective writing that contains one point of view of one of the travelers

Oliver should include the main events leading to the expansion of the country in his summary.