Other / Move
simultaneous - Refers to actions or events that are performed or experienced at the same time, without any time between them.

They made a simultaneous broadcast of the event across multiple time zones that allowed people from all over the world to watch it live.
grapple - To seize something and hold it firmly; to wrestle with; to ponder and intensely evaluate a problem; to struggle to deal with

When Bill got lost on his trip to Paris, he had to grapple with the task of finding a place to sleep and not knowing the language.
stride - Progress or advancement: A significant step forward in development or improvement; or a long step or pace: A way of walking with long, decisive steps.

The Supreme Court's decision was a signfication stride in the movement towards desegretation.