Did not kknow where to put this but anyone?

Name the painting above and its artist. what media was used to create this piece? why do you think the artist chose to use this media for this piece?

Why did emerson most likely include the quotation from john brown speech

Need some ! asap i need to figure out 3 major changes in bridges over time and why these changes to adapt to both improvements in technology and changing social links would also alot.