Answer:
<em>Constantinople</em><em> </em><em>lays </em><em>on </em><em>the </em><em>Bosporous </em><em>straight</em><em> </em><em>which </em><em>separate</em><em> </em><em>E</em><em>urope </em><em>and </em><em>Asia.</em><em> </em><em>The </em><em>Bosporous </em><em>straight</em><em> </em><em>also </em><em>linked </em><em>the </em><em>Mediterranean</em><em> </em><em>sea</em><em> </em><em>and </em><em>the </em><em>Black </em><em>sea </em><em>important </em><em>for </em><em>trade.</em><em> </em><em>This </em><em>allowed</em><em> </em><em>the </em><em>city </em><em>to </em><em>control </em><em>all </em><em>trade </em><em>routes</em><em> </em><em>between</em><em> </em><em>Euro</em><em>pe </em><em>and </em><em>Asia.</em>
This is a bit subjective, but it could be argued that social change had the biggest change in Southern life, since the abolition os slavery (which was inherently a social issue) led to the biggest changes.
In his lawsuit, Brown claimed that schools for black children were not equal to the white schools, and that segregation violated the so-called “equal protection clause” of the 14th Amendment, which holds that no state can “deny to any person within its jurisdiction the equal protection of the laws.”
Congress can check the branches. Congress makes sure that the power stays equal between each branch
