Answer:
I think it is C. discovery
Explanation:
Discovery is a process by which adversaries obtain trial-related evidence from one another
The southern(who were previously Confederate) states all wrote new Constitutions and swore loyalty to the Union by 1877. Also, the 13th amendment(which states no slavery n<span>or involuntary servitude</span> is allowed unless punishment... in u.s.), 14th amendment(forbids states to restrict simple rights of citizens etc,), and 15th amendment(citizens in U.S. cannot be denied due to race, color, etc. to vote) were acknowledged and remained after the reconstruction. Former slaves also had a new life ahead of them: they could now be educated, choose who they wanted to marry, and choose jobs. Unfortunately, the reconstruction didn't heal African American/ white man wounds; and even though there were laws for equality, for many upcoming years, many black people still had many problems with white people who still believed they were somehow superior.
In the face of all these events of the century, the United States remained intelligent, providing weapons in the war, another making allies to remain victorious. Among all these moments in history, the United States remained one step ahead in strategic terms, of what could happen next and how to make the error something that could benefit it. In this sense, I believe that all events have made the United States become a world power through strategic acts.
<span><span> 1.Hadean eonsometimes called Age of Mammals </span><span>2.Archean eontoxic atmosphere; first bacteria </span><span>3.Proterozoic eonbuildup of oxygen first eukaryotes </span><span>4.Phanerozoic eoncurrent eon </span><span>5.Paleozoic eratime of the dinosaurs </span><span>6.Mesozoic eralargest mass extinction in Earth's history </span><span>7.Cenozoic era<span>formation of the solar system</span></span></span>
