19th-century cost-saving innovations in steamboat transportation included all of the following except
a. the replacement of steam-powered boilers by coal-burning engines.
b. the adoption of lighter-weight boats.
c. increases in the amount of cargo carried per vessel.
d. learning to operate the boats at night.
Question 2
Andrea Schwatz has argued that the Great Depression was caused by
a. the fall in the stock of money.
b. the fall in consumer durable spending.
c. the fall in investment spending.
d. the increase in nominal wages.
Like most world-changing inventions, the printing press of fifteenth-century Europe took advantage o
Medicinal leeches on a patient’s neck. Today leeches are sometimes used in microsurgery to prevent b
Wang Guochen, c. nineteenth century
Wilbur Wright glides at Kitty Hawk, 1903, ushering in a century where airplanes would become the ...
Cost of Copying for the Follower Country
After 159 days,she paid a maturity value of $11,626, which included interest of $814.