Describe how the ancient people follow some natural event to measure time

5 Tools We Use to Measure Time

Sundials.

Water Clocks. - A water clock uses the flow of water to measure time

Mechanical Clocks. - clock are wound with a key, and this tightens the mainspring.

Quartz Clocks - Inside a quartz clock or watch, the battery sends electricity to the quartz crystal through an electronic circuit.

Atomic Clocks. - a clock device that uses a hyperfine transition frequency in the microwave

Answer: they used seasonal wind, temperature changes, they also used the flooding of rivers. all these are used to tell time

Explanation: the seasons change the climate of the area