Answer:
A
Explanation:
Agriculture was the main occupation of people in the Union during the Civil War.
Sources:
-Fite, Social and industrial conditions in the North during the Civil War, (1910) pp 1–23; Paludan, A People's Contest" pp 159–69
-Grimsley, Mark. The Hard Hand of War: Union Military Policy Toward Southern Civilians, 1861–1865. Cambridge, UK: Cambridge University Press, 1995.
When he published the results of his<span> experiments in the French journal Comptes Rendus de l'Académie des Sciences </span>in 1900<span>, he neglected to mention Mendel's </span>work<span>, but after criticism by </span>Carl Correns<span> he conceded Mendel's priority. </span>Correns and Erich von<span> Tschermak now share credit for the rediscovery of Mendel's laws.</span>
During<span> the 1960s the availability of primary sources made historical research and</span>writing<span> possible and the debate became more vigorous. Historians Herbert Feis and Gar Alperovitz raised searching questions about the </span>first use<span> of nuclear weapons and their broader political and diplomatic implications.</span>
