The hotel industry originated in the 6th century BC. The earliest inns were basic halls where travelers slept alongside the animals they traveled with. Over hundreds of years, as travel changed, hotels developed into various classifications by market segment, room size, level of service, ownership, and star ratings. ITC hotels own and operate over 100 hotels across India, including landmark properties like the ITC Maurya in Delhi. They offer a variety of services and facilities and use a 7P marketing approach. Britannia hotels operate over 40 hotels across the UK, growing from a single acquisition in 1976, and offer conference and event facilities for up to 4,000 delegates.