Answer:
I think it's A . the crusaders attack on Constantinople
Foreign policy is a government's strategy in dealing with other nations
I believe the answer is <span>D. Both conflicts were fueled by rivalries between global superpowers.</span>
If the change is the Industrial Revolution:
transcontinental railroad: helped to transport goods and get across the country
US army: helped to protect the US and make sure no one is going to break the new amendments
Discovery of resources in western land: Allowed the US to be able to expand and people would be able to live, could also give the US more money