Which of the following groups frequently protested the hiring of unskilled factory workers in the 1800s? a craft guilds b labor unions c pinkertons d trade unions

the tariff was created to protect industry in the northern part of the united states. industries in the north were being driven out of business by imported goods that were priced at a low rate. the goal was to protect these industries   by taxing the goods.

2018 means 2018 ce or common era

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