What units of measurement did the scientists in 1875 from 17 countries agree to use to communicate with one another

The metric system

Explanation:

The metric system is a measurement system using basic measurements like the meter to measure length, seconds to measure time and kilogram to measure mass, among others. This system is decimal and is used in various countries around the world doing the most recognized and internationally accepted system.

On 7 April 1795, the metric system was accepted in France as the official system of the country to unify the measurement system after the French revolution. In 1875, 17 countries signed the Treaty of the Meter becoming the most widely used and recognized system worldwide.

I hope this information can help you.

your answer would be “dry”