What democratic reforms took place in Great Britain by the early 1900s?

The Reform Acts and representative democracy

For centuries, Parliament consisted of a small landowning elite whose priorities were their own power and prosperity.

From the 18th century onwards, the social changes brought about by industrial growth and the decline of agriculture meant that the demographic landscape of Britain was altered.

With these changes came demands from the working and middle classes for equality and fairness. It took many years for a more representative Parliament to be achieved.

Their system of mathematics.

Explanation:

The Maya discovered zero.  Most of the world's civilizations had no concept of zero at the time of the Mayans.  Without zero there would be: No algebra, no arithmetic, no decimal, no accounts, no physical quantity to measure, no boundary between negative and positive numbers, and no computers.  The Mayan’s discovery of zero was one of the most significant steps to get to where we are today.

The counting system was so simple.  The Mayans figured out a genius system of counting which only required three symbols, a dot, a line, and a shell.  These three symbols could be used in various combinations to keep track of the calendar and do arithmetic.  Even the most uneducated people could use it to do basic trade.