Let me handle your first question -- always good to do one question at a time here. :-)
Prior to President Theodore Roosevelt, those who preceded him in federal government had tended to side with industry leaders, expecting laborers to fall in line and do the work for the good of the companies. In 1902, when there was a particularly tense strike by coal workers, Roosevelt invited both sides (labor leaders and management leaders) to the White House to negotiate. This was an example of the way he saw the role of government leadership as "steward" to the nation, mediating on behalf of everyone's interests, not just the interests of a powerful small group. His "Square Deal" policies were aimed at making things fair and square for the general public. An example of this would be how much land was set aside under his administration as national forests, national parks, national monuments, etc. He was seeking to protect the use of the land for all Americans' interests, rather than letting corporations tear into any land or forest they wanted in order to grab natural resources.
There are several ways in which nationalism, imperialism, and militarism helped set the stage for World War I, but it general it made each European country feel that it was superior to the others.
The continental congress was unicameral in nature to avoid disputes with in itself. As a bicameral congress can cause issues inside itself.
Today Constantinople is known to the world as Istanbul: the biggest and most western (both culturally and geographically) city in Turkey.
For some time it was the capital of the Byzantine Empire (before it was the capital of the Ottoman Empire) - so the correct answer is Byzantium
Answer:
54th Regiment, in full Fifty-fourth Massachusetts Volunteer Infantry Regiment, Massachusetts infantry unit made up of African Americans that was active during the American Civil War (1861–65). The 54th Regiment became famous for its fighting prowess and for the great courage of its members
