What was the most significant factor that promoted anglicization of the british colonies? -growth of autonomous political communities based on english models.-development of commercial ties and legal structures.-emergence of a trans-atlantic print culture.-protestant evangelism, religious toleration and the spread of european enlightenment ideals.

The answers are all of the above:
-Growth of autonomous political communities based on English models. The english models relied on heavy involvement of the churches within the government
-Development of commercial ties and legal structures. Which allow private sectors such as christian business owners to spread their influence in the legislation
-Emergence of a trans-Atlantic print culture. which help the church to print out the christian teaching among the people
-Protestant evangelism, religious toleration and the Spread of European Enlightenment ideals.

A. southerners underestimated republicans eagerness to end slavery.

The answer coastal regions and peary land