Answer:
Northerners were against the annexation of Texas because it would have given the South another slave state. The Northerners were concerned this would allow for pro-slavery policies and laws to be developed and passed in our country.
Explanation:
They sent minor threats, but aside from that did nothing else.
The archduke was assassinated in the city of Sarajevo
C. on the basis of race or color
explanation: the 15th amendment is the "right of citizens of the United States to vote shall not be denied or abridged by the United States or by any state on account of race, color, or previous condition of servitude."