What can you infer about the two early space stations, based on the graphic above?
The Soviets' space station was faster.
The Soviets did not accomplish a significantly better space station in 13 years.
The American space program was less developed than the Soviet space program.
Skylab was significantly larger.

the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).

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