Innovation. Many new radical ideas and things were coming about. Breaking away from the conservative America a good example is flap dancers they broke societies stereotypes a lot
One of the most important was climate changes. As climate changed, nomads had to find new places to migrate to which led to people going to areas that were uninhabited before. Another was the development of agriculture which more or less ended the nomadic way of life when people started settling.
ANSWER IS A. Old Spanish trail
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Die in committee or subcommittee, where they are pigeonholed, or simply forgotten and never discussed. If a bill survives, hearings are set up in which various experts, government officials, or lobbyists present their points of view to committee members.