The translators of the AKJV in 1611 properly identified the man of sin, son of perdition, little horn, mother harlot, great whore, antichrist, etc. in the introduction.

The reformers knew who it was.

Spurgeon had it figured out.

For some reason (a fabricated interpretation of Revelation called premillinialism, pre-tribulationism, etc. crept into the churches) modern day Christians can't seem to wake up.

It is Rome. The papacy. Proclaiming themselves to be CHRIST INCARNATE, they blasphem our LORD every time they perform a mass. They have MOST OF THE TRUE CHURCH celebrating the greatest mass every year CHRISTMASS. Christ died ONCE for the sins of the elect.

Roman Catholicism is the second part of the 10 toes (the clay) that the Son of God returns and grinds to powder during their reign. The first part was the iron (Rome the government, not Rome the false religion).

Go read up on Historicism and it will all fall into place.
Go to www.letgodbetrue.com and find the sermon series called "The Witness of 70 AD" if you have any desire to hear the true interpretation of Matthew 24.