Final answer:
In 1960, Jane Goodall began her study of chimpanzees and observed their tool use, while the Leakey family made important discoveries about early hominins, including Homo habilis.
Step-by-step explanation:
The significant findings related to early humans and primates were made in 1960 and are linked with renowned researchers such as Jane Goodall and the Leakey family. Jane Goodall started her groundbreaking study on chimpanzees in 1960, which included her observation of chimpanzees using tools, such as stripping twigs to fish for termites. This was a pivotal moment in understanding the cognitive abilities of primates. In the same time period, the Leakeys were making important discoveries about early humans. Mary Leakey and her team discovered fossils of Homo habilis and later, in the 1980s, discovered footprints at Laetoli that provided clear evidence of bipedalism.