I believe it's <span>B.Researchers everywhere began to collaborate and share data.
</span>
Which of the following was a direct cause of job specialization in early human civilizations?A. Improvement of hunting methods.
B. Development of agriculture.
C. Stratification of society.
D. Establishment of trade networks
THE ANSERW IS B
The stock market crash of 1929; the collapse of world trade due to the Smoot-Hawley Tariff (Hawley, it was signed by President Herbert Hoover on June 17, 1930. The act raised US tariffs on over 20,000 imported goods. The tariffs under the act, excluding duty-free imports were the second highest in United States history, exceeded by only the Tariff of 1828), government policies; bank failures and panics; and the collapse of the money supply.
B. Court Packing. <span> It won't let me answer unless there are 20 characters so I added this pointless sentence.</span>
