Question

which best describes what occurred during the détente era?
arms reduction
arms limitation
alliance formation
increased openness

Explanation:

The détente era was characterized by efforts to ease Cold - War tensions. Key among these were arms - limitation treaties like SALT I and SALT II between the US and the Soviet Union. These treaties aimed to limit the number of nuclear weapons, not necessarily reduce existing ones. Alliance formation was not the main feature of détente, and increased openness was not the defining aspect compared to arms - limitation.

Answer:

arms limitation