Lydia experiences a rush of euphoria after her daily five-mile run. this sensation is known as

"Runner's High" due to happiness hormones:  dopamine and serotonin.

Explanation:

The feeling of euphoria after a full workout, the joy when you think about the next workout or the growing confidence in your own performance is known as "Runner's High". Those responsible for this are the biochemical processes, the release of the so-called happiness hormones. The best known among them are endorphins, dopamine and serotonin.

world war i had a devastating effect on german-americans and their cultural heritage. up until that point   german-americans, as a group, had been spared much of the discrimination, abuse, rejection, collective mistrust experienced by so many different racial and ethnic groups in the history of the united states. indeed, over the years, they had been viewed as a well integrated and esteemed part of american society. all of this change with the outbreak of war.  

male citizens in athens could vote on all the decisions that affected the city and serve on juries. however, democracy was not open to everyone. citizen women and children were not allowed to vote. slaves and foreigners living in athens (known as metics) were banned from participating in government.