Final answer:
The Maryland Toleration Act of 1649 guaranteed religious freedom to all Christians in Maryland, laying the foundation for religious freedom in American government.
Step-by-step explanation:
The Maryland Toleration Act of 1649 guaranteed religious freedom to all Christians in the colony of Maryland. This act was significant for the development of American government as it established a precedent for religious freedom and tolerance, laying the foundation for the First Amendment of the United States Constitution. It attracted Christians seeking freedom from religious persecution and made Maryland one of the most tolerant colonies in terms of religious policies.