The word 'effect' should go in the blank because Mr. Roosevelt's speech had a physical impression on the audience. The blank can't be filled by a verb, so the the answer must be 'effect' or 'affection'. Since 'affection' does not make sense in this context, 'effect' is the best answer.
Jack wanted to be the leader of the group, but most of the people voted for Ralph. A <u>rivalry</u> has been happening between the two boys and their split was because of growing tensions. Disagreement is another reason why the boys have split apart.