Who wants to be my friend

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.

What step did the artist use when drawing this pic?

Match each word to it's correct meaning. 1.)art 2.)digital 3.)digital art the creation of aesthetic objects, environments, or experiences that can be shared with others representation of information in ones and zeros, especially for use by a computer art created or modified on a computer by a computing process