Give me a clear explanation of an appositive in literature, and a definition

Does anyone read this story in 9th grade "when mr. pirzada came to dine"

One of the author’s purposes in the code book is to explain different types of codebreaking to his readers. which line best demonstrates this purpose? a theoretical breakthrough would be a fundamentally new way of finding alice's private key mathematicians have been studying factoring for centuries, and modern factoring techniques are not significantly better than ancient techniques a more recent development is the so-called tempest attack, which aims to detect the electromagnetic signals emitted . . in a computer's display unit if scientists could build a quantum computer, it would be able to perform calculations with . . enormous speed

Hello i will mark you as a brainliest answer my : 1) what is the summary of the poem the eagle by alfred lord tennyson? remember i will mark you as a brainliest