The people were protesting some corrupt practices in the Catholic Church.
Catholics called them heretics, they called themselves protestants.
Protestants are called protestants because they PROTESTED against the catholic church because Henry viii was catholic but he wanted a divorce but the catholics would not let him, so he started his own church( church of England) and they were called the protestants, also you can not be protestant and catholic.
Because they protested against the Catholic church.
The Inquisition
Roman Catholic AnswerThe largest group of Christians who apostatized and left the Church in recent times were the various protestant groups. Their name at the time, in the Church, was heretic. They, themselves, called themselves various things: Lutherans, Anglicans, Presbyterians, etc. Now they are known as protestants (collectively) and in the Church, as "separated brethren". A complete list of heresies is attached below, all of these groups protested the Church (not just the protestants, but dating back to the first century) and began to worship in their own way:
Protestants by definition protest some Catholic teachings. The various branches of Protestantism broke away from the Catholic Church in the 1500s. Eastern Orthodox churches broke away earlier after disagreements over doctrine, so could also be said to "protest" some Catholic teachings, although Orthodox and Catholic churches are often said to be "in communion" with each other, which cannot be said of Catholic and Protestant Churches.
Because they protested gainst te Catholic Churches Teachings and Practices. His teachings formed the basis of the Lutheran Church.
.Roman Catholic AnswerMost of the people who protested against the Church in the sixteenth century were heretics and apostates. Today they are, more politically correct, known as "protestant reformers" by those who followed them.
Protestants
The Catholic Church has always considered Mary of Bethany and Mary Magdalen to be one and the same. She was the sister of Martha and Lazarus of Bethany. Some Protestants differ and say they were two distinct individuals. I guess that is why they are called Protestants.
Christians who separated from the Catholic Church were called Protestants. This term emerged during the Reformation in the 16th century when figures like Martin Luther and John Calvin challenged Catholic doctrines and practices. The movement led to the establishment of various denominations, including Lutheranism, Calvinism, and Anglicanism, among others. Protestants sought to reform what they viewed as corrupt practices within the Church and emphasized principles like sola scriptura, or Scripture alone as the basis for faith and practice.
The Roman catholics, then people protested against it, who were called the protestants or the lutherans, this was called the refoemation and was lead by Martin Luther in the 16th century