Final answer:
Automatic voter registration is a system in which voters opt-out of registering to vote. Unlike many other countries, the United States relies on individuals and states to set up registration requirements and procedures.
Step-by-step explanation:
A system in which voters opt-out of, rather than opt-in to registering to vote is known as Automatic voter registration. Unlike countries such as Japan, Australia, Belgium, Germany, and Sweden, where the government automatically registers citizens to vote, the United States relies on individuals and states to set up registration requirements and procedures. States that have adopted automatic voter registration have shown increases in the number of registered voters.