After the revolutionary war, the USA formed a confederacy its a loose union of independent states. hope this helps :)
Answer:
James Madison gave up his military career for a political career.
Yellowstone National Park was established on <span>March 1, 1872. </span>
<span>Industrialization made it possible to develop new technologies in warfare like create more advanced guns, planes, ships, bombs, and similar things. Countries were richer so they could invest in militaries, and the machines made everything more precise and better which resulted in a stronger, more developed military overall.</span>
