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)%0D%0AResponses%0D%0A%0D%0Athe main events leading to the expansion of the country%0D%0Athe main events leading to the expansion of the country%0D%0A%0D%0Adetails about each passenger of the caravans that traveled west%0D%0Adetails about each passenger of the caravans that traveled west%0D%0A%0D%0AOliver's opinion about whether it was a good idea to expand%0D%0AOliver's opinion about whether it was a good idea to expand%0D%0A%0D%0Asubjective 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. This would encompass key historical events such as the Louisiana Purchase, the Lewis and Clark Expedition, and the Oregon Trail, which were all crucial in the beginning of westward expansion in the United States. By including these main events, Oliver can provide a comprehensive overview of how the country expanded westward during this time period.

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the main events leading to the expansion of the country