Where in Europe did they use zero first?

The concept of zero was first used in Europe during the late Middle Ages, primarily through the influence of Arab mathematicians who transmitted knowledge from earlier Indian sources. The introduction of the Hindu-Arabic numeral system, which included zero, became more widespread in Europe after the publication of Fibonacci's "Liber Abaci" in 1202. This text helped popularize the use of zero and positional notation in mathematical calculations across the continent.