Read the excerpt from the poem "barbara frietchie.” up rose old barbara frietchie then, bowed with her fourscore years and ten; bravest of all in frederick town, she took up the flag the men hauled down; in her attic window the staff she set, to show that one heart was loyal yet. what can the reader conclude about barbara frietchie based on this excerpt? she was forgotten by the people in frederick. she was proud of her country. she was not committed to anything. she was not a risk-taker.

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 mark this and return save and exit next submit

Which development most aided explorers in their ability to set sail the oceans to discover the new world during the age discovery? a.waterproof sails b.the printing press c.map-making devices d.fictional travel accounts

What are the similarities of physical and chemical change ?