<span>The economic and social crises chipped away at the foundations of Medieval society in the 1300s and 1400s. Wars raged constantly during this time. The conditions were ripe for great social changes.</span>
Answer:Morse-Vail Telegraph Key.
Explanation:
The main reason why the border states did not secede in 1860-1862 was because they were concerned with the large amount of military coercion that was taking place in the South, and they felt that the South was ultimately unjustified in removing itself from the Union.
United States involvement in the Boxer Rebellion would have contradicted the ideals George Washington laid out in his farewell address. It also would have violated the Monroe Doctrine by becoming involved in Europe's subject matters.