Vatican City was brought into being by a treaty.
Rock climbing style refers to the method and equipment used to establish and repeat rock climbing routes .. rock climbing. rock climbing. Style also incorporates values from sportsmanship and environmentalism to uphold and further develop rockclimbing .. Each climbing style can be considered a sort of game with rules or standard commonly referred to as climbing ethic .. These ethics are some of climbing 's social mores .. social mores. social mores. Lito Tajeda-Flores elaborated on ` Games Climbers Play ' defining a Game as an arena -LRB- boulder , crag , wall , etc. -RRB- and an accompanying Style .. Royal Robins said  : ` in rockclimbing -LSB- Style -RSB- refers to methods and equipment used , and the degree of ` adventure ' involved ' .. In his ` The Murder of the Impossible ' Reinhold Messner underscores the importance of ` adventure ' and Style adjusted to task at hand .