This is known in history as the Civil Rights Act of 1866 where a coalition was formed by both moderate and radical republicans. In such act, it made African Americans citizens of the United States of America, including the total elimination of discrimination against African Americans.
Voltaire criticized the Roman Catholic Church claiming that it is a corrupt institution which creates dogmas for people and enriches itself. He also claims that Christianity in general is ludicrous and ridiculous, and also absurd.
Option (C) castes is the correct answer.
The correct answer is D) Ancient Mesopotamia thrived before the Classical Period. It is said the period of Ancient Mesopotamia was from 3100 BC until 539 BC. Nowadays, the area which would now cover Ancient Mesopotamia would be Iraq, Kuwait, a part of Syria and to a much smaller extent, a little part of Turkey and a little part of Iran. They used the Tigris-Euphrates River where they used irrigation and are widely known for their ziggurats, seen as a very sophisticated society and the birthplace of the Western world.