The role of the president has evolved over time because
a) the needs of the nation have changed.
b) the role of the executive branch has changed.
c) the role of congress has changed.
d) the needs of the chief of staff have changed.

The role of the president has evolved over time because: a) the needs of the nation have changed.

The role of the president has evolved over time because the needs of the nation have changed. Option A is correct.

The president is a common title for the head of state in most republics. In politics, president is a title given to leaders of republican states. The functions exercised by a president may se different according to the form of government.  

In authoritarian regimes, a dictator or leader of a one-party state is also recognized as a president.

trade in silk, spices, and precious metals.

answer first choice

booker t. washington was an educator who established the tuskegee institute. washington argued that african americans should learn trades that would offer them the opportunity to be progressive citizens. instead of fighting against discrimination, washington argued that african americans should use their education and knowledge to become self-sufficient in american society and not in competition with white americans.

w.e.b du bois was the founder of the niagara movement and later the naacp, du bois disagreed with washington. he argued that african americans should consistently fight for racial equality.

ida b. wells was a journalist who wrote about the horrors of lynching in the south. wells work could be considered muckraking as it led to the development of the anti-lynching campaign.