was there any expo organized over there recently?
Yes,  Expo 2020
Dubai
On 2 November 2011, four cities had their bids for Expo 2020 already lodged, with Dubai making a last-minute entry. 
what is st kilda? An isolated archipelago situated west-northwest of North Uist in the North Atlantic Ocean. what does archipelago mean? An island group or island chain. where did it get its name from? The origin of the name is a matter of conjecture. what are some artificial versions of it? Palm Islands, World Islands and Marker Wadden. where is the first island located? Dubai, United Arab Emirates. what are some repercussions associated with it? Weakening of the shores of Dubai due to the waves hitting the shore in an unusual manner. what were the effects while constructing it? A reduction in the area's aquatic life, erosion of the coastal soil, and irregular sediment transport along the shore. how were the risks mitigated? To counteract with the waves and the constant motion of the sea, breakwaters were built all around the island. mention a few obstacles after its construction? Installation of utilities and pipelines was very difficult and laborious. are there any monorail at the place where it is located? Yes
wiki:19486047
Dubai [SEP] Expo 2020
On 2 November 2011, four cities had their bids for Expo 2020 already lodged, with Dubai making a last-minute entry. The delegation from the Bureau International des Expositions, which visited Dubai in February 2013 to examine the Emirate's readiness for the largest exposition, was impressed by the infrastructure and the level of national support. In May 2013, Dubai Expo 2020 Master Plan was revealed. Dubai then won the right to host Expo 2020 on 27 November 2013. The event will bring huge economic benefits by generating activities worth billions of dirhams and may create over 270,000 jobs. The main site of Dubai Expo 2020 will be a 438-hectare area (1,083 acres), part of the new "Dubai Trade Centre Jebel Ali" urban development, located midway between Dubai and Abu Dhabi.