One argument was that if the U.S. solely did a "test demonstration" of the atomic bomb, versus dropping it immediately on Japan, Japan would see the devastation of the bomb and would surrender on their own will without suffering huge losses.
The Qin dynasty was the first dynasty to start connecting the various walls into a greater whole. That happened around 221 to 206 BC and was done under the reign of Qin Shi Huang. Though the wall was later improved still by other dynasties, it was during the Qin dynasty that the Great Wall of China was first formed into a cohesive structure.
Dust bowl is caused in the prairie grasslands due to the destruction of grassland and introducing new farming practices. As these farming practices do not include dry land farming technologies that's why unable to control the action of aeolian processes.
Explanation:
Dust bowl was created in the grasslands due to the removal of grass by the practice of crops. Crops are not grown by maintaining proper farming technologies that is dry land farming, That's why it created pollution and dust throughout the grass land which was very harmful for the environment.
Dry land farming is the technology which includes all the strategies needed to implement in the dry lands with grasses and dry climatic region. Grasses are environmentally accustomed in prairie land. But replacement of it through crops damaged the whole environment
The answer is c. 1843
hope i helped