In point of fact it is archaic at two removes since the form in haver is now largely restricted to the literary language. The meaning is roughly 'for you to speak' , and so on. If the personal infinitive is the result of a confusion between the future subjunctive and the infinitive, then why was there not an analogous form in Italian. Although they used Spanish for trade purposes. The number expelled is uncertain, since no precise records were kept.
Guesses vary from a few tens of thousands to as much as a quarter of a million.
Of course, the world population was much smaller at this time. On a number of occasions general pardons were granted to those who had judaized. It is included in the Orbis Latinus with the permission of the author.