What major developments characterized the high Middle Ages from 1000 to 1300?

The middle ages were characterized by the development of modern states of Europe as they exist.

Explanation:

Middle ages are touted as the dark age of Europe  but the foundation for the modern European city states and states was laid during the middle ages itself.

The middle ages was a also the time consolidation of the languages which began to be much less fluid as the time went on.

English codified itself by the end of the 13th century and so did French and German along with Spanish and Italian.

All these languages would pretty much reach their final form by the end of the middle ages and the countries they represented would gain a national character.

answer: the time zones used to be whatever the local authority wanted them to be. one town might have 6am whenever the sun came up and another town had 6am 10 minutes later.  

the trains had a hard time when their orders said to be at a certain point at 6am.  

6am, but who's 6am.  

the railroads got together and set the time zones more or less along the longitude lines across the country.

explanation: