What did the puritan belief that all Christians have a duty to study the bible led them to

The Puritans believed that Christians should return to the original biblical teaching.

Explanation:

The Reformation is a movement that swept Europe during the 16th century. Several different factions emerged from that movement. The Puritans were members of the teachings of John Calvin. The Puritans were against the luxury that was ubiquitous in the church. That was contrary to biblical principles that propagate modesty. Because of such beliefs, they came into conflict with the church and its leaders and the rulers who supported the church. The Puritans believed that people should live by strict biblical rules. Every segment of their daily lives was imbued with religious principles. As they could not realize their religious beliefs in England, they decided to migrate to North America.

the answer to your question is:

strong-mayor system

the right answer is the end of world war ii

after the end of a global wwii all the nations involved, in an attempt to create an organization to maintain world peace. this agreement would work settling international disputes via negotiation and arbitration instead of leading the issues escalate to another war.