Shia Islam can as well be regarded as Shi'ism in Islam, which is a branches of Islam, it also has its own explanation about the Muhammad's Successor.
Since, there was a claim that prophet Mohammed doesn't point anyone to succeed him after his death.
Shias believe that relative of Muhammad should succeeed prophet Muhammad, i.e someone within the cycle, which must be followers of Ali(Sunni) then Abu Bakr was chosen as his Successor, who was a very close advisor as well as companion to him, and regarded as first caliph.
Land surrounding the Panama Canal is very fertile. The warm tropical weather is good for growing things. The original river and later the building of canal made trading very convenient. So there are a lot of industries developed in that region.
