What Year Is It? PLEASE I WILL GIVE BRAINLIEST

During the 19th century the united states government reacted to the union attempts to organize labor by

When did stockpiles of strategic nuclear weapons begin to dramatically decline in the united states? a. the mid-1960s b. the mid-1970s c. the mid-1980s d. the mid-1990s

Which would make the best heading for this list of notes about the migration of african-americans during the reconstruction era?