Three aspects would technology, goverment and cultural diffusion hope this helps
Answer:
The nations of Europe believed that to be truly great, they needed to have a powerful military. By 1914, all the great powers except Britain had a large standing armies. ... This alliance ensure that Britain would not fight against France or Russia but not necessarily go to the war with them.
Explanation:
The Answer is
B) freed slaves
Issues began to arise that caused people to divide which eventually lead to political parties i.e Democrats, Republicans, Third Parties.
It also helped with voting processes and gave our government a more defined system.
