http://git.vern.i2p/vern/blog/commit/6f32b72cc4754b72309a2b60c36abb6d49064ef6?i2paddresshelper=XeeEcrjZBSZvLCLt32HWWojBguqcQNIfCcYnLhCSpV3LHMHvq-3nkdVw3DGoJYEQnLEpbhLEH~KwUXs42auWcbRedx895ciACwHpMBnchqCYvYeqKNOnMnlZkpSGJNNSRXAcUM48WLh7v6PscDCDKQFN8KVo9n6OBm0KKQjmaQjIN3unappXVvN90d0Q6tWjftn1mTtm2Is4sYYM3glXr47IXPjTha~XW6Ex5wNqtD7pR5rNN5g5Xcpww2teT~mo52Z1xFE5g7ZgK3rHRVnShmolLNwU2VT1ZGqI5X74Tq6DPu6itln3SYyF6db-X
Sadly, some countries block Tor Guard Nodes (entry nodes), so without bridges, accessing Tor would be impossible. A bridge is a server that isn't listed officially on the Tor relay list, but allows for people to circumvent blockages and access Tor behind them.