Who claimed that behavior is affected by reinforcement

Agroup of anthropologists from the future want to study the culture and society of the twenty-first century. they cannot find any written documentation of this time period, so they must conduct an archaeological excavation.identify the artifacts, features, and ecofacts they will find during their fieldwork. what will these items tell the anthropologists about our culture and society?

Who gave the famous "i have a dream" speech at the march on washington?

Plz plz i need i don’t want to fail plz me don’t let me fail i need on a 4 paragraph about how tighter british control led to a revolution in colonial america