Which groups of people were affected by the US federal law called The Amnesty Act of 22 May 1872?

Question

What is the name collectively given to several groups of people in Zimbabwe and southern Mozambique, originally known as the Karanga?

Answer 1

Ex-Confederate troops
The Act removed voting restrictions and office-holding disqualification against most of the secessionists who rebelled in the American Civil War, except for some 500 Confederate military leaders, which mainly affected over 150,000 former Confederate troops who had taken part in the American Civil War.