The discovery of metal/ using it to make tools
Answer:
they were allowed to vote, actively participate in the political process, acquire the land of former owners, seek their own
Explanation:
<span>Between April 1861 and April 1865, an estimated 1.5 million troops joined the war on the side of the Union and approximately 1.2 million went into Confederate service. An estimated total of 600,000 were killed in action or died of disease. More than twice that number were wounded but survived at least long enough to muster out</span>
This process is called, "Journalism".