Possibly allies and they way they interacted with other countries, by trade etc. and strengthening their economy for war.
<span>Northerners lost interest in Reconstruction was because "B. Northerners were focused on the political corruption plaguing the nation," since this was during the Progressive Era. The Progressive Era was a period of widespread social activism and political reform across the US, from the 1890s to the 1920s. The main objectives was to eliminate problems caused by industrialization, urbanization, immigration, and corruption in government.</span>
A. Food. They fave out food surpluses that helped to lead to population growth and trade.
