Watch this video about the amazing photographer, Margaret Bourke White.   She accomplished being "first" in many categories.  What are 3? Help please

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.

The opening section sounds marchlike, with accented beats and alternations between instrumental groups. eventually, a total change of character marks a short, new section. at approximately which time interval from the beginning does this appear?

In this work of art, which of the following can be observed? a. the artist painted the figures with elongated necks, legs, and arms. b. the figures are placed in a triangular shape, as geometric conventions were common in art during this time period. c. this piece is intended to represent the christian trinity. d. all of the above can be observed.