Who was the first european nation to explore the world in the 1400s? *.

2018 means 2018 ce or common era

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

the  equal rights amendment  (era) states: "equality  of  rights  under the law shall not be denied or abridged by the united states or by any state on account of sex." congress first introduced the era in 1923, but the campaign for ratification took off in the 1960s during the  civil rightsmovement.

spread of christianity