Пре­об­ра­зуй­те, если это не­об­хо­ди­мо, слово BEGIN так, чтобы оно грам­ма­ти­че­ски со­от­вет­ство­ва­ло со­дер­жа­нию тек­ста.

It is known by different names in different countries, but it is equally popular all over the world. The home of the subway is London. The first system, called the London Transport Executive, __________________ to operate in 1863.