Contrast how white light interacts with a blue book and a blue stained glass window

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.

george calvert wanted maryland to be a colony where could live safely. because georgia's founders wanted a colony of small farms rather than large plantations, they originally banned under british law in the 1700s, people who owed money could be