Rewrite each original sentence in order to make it easier to understand by non-native speakers of English. You can do so by replacing complex words with simpler synonyms (i.e. paraphrasing), deleting unimportant information (i.e. compression), and/or splitting a long complex sentence into several simpler ones. The final simplified sentences need to be grammatical, fluent, and retain the main ideas of their original counterparts without altering their meanings.

In the historiography of Japan, the Edo period from 1590 to 1868 is also sometimes referred to as the early modern period.
In the historiography of Japan, the Edo period is from 1590 to 1868. It is sometimes called the early modern period.

Stoke play their home fixtures at the Britannia Stadium, a 28,000 all-seater stadium.
Stoke play their home fixtures at the Britannia Stadium. It is a 28,000 seat stadium.

Eastman and Kotik performed together extensively in the early to mid 1970s.

Eastman and Kotik worked together a lot in early/mid 1970's.

