Twice in two years protesters in El Alto blockaded access to the capital, causing governments to fall, paving the way for Mr Morales's election in December 2005.
East-west tensions intensified later that year when Stalin began to blockade access to western Berlin.
Although epidural anesthesia is a common practice in neuraxial blockade, difficult access to the epidural space is a frequent problem in operating theaters.
Shipping workers voted to extend a crippling 24-hour strike, leaving 28 large carriers stranded and blockading access to a major petrochemicals complex and the key oil port of Fos-sur-Mer Fos-sur-Mer Fos-sur-Mer
The siege, which only blockaded land access to the city, made the army dependent on the ability of the navy to supply it with fresh provisions.
In 1555, after a Baltic blockade broke off access to the West, Tsar Ivan the Terrible sought help from London, an unprecedented move at the time.
So Russia was able to break the blockade, and the country gained access to the resource it needed most at the time: Western European skills and knowledge.
Dutch forces responded by blockading the Schelde River, Antwerp's only access to the sea.
By blockading roads and sealing off access to the nearby international airport, "For simple geographic reasons, protesters from El Alto were able to besiege La Paz," said Sian Lazar, author of "El Alto, Rebel City," a new book about the city's growing political power.
During this time, Ivan Botsis was sent out with a fleet of galleys to block access to the bay, thus completely blockading the town and fort of Vyborg.
