The federal aid highway act was established to create a better transportation system in the united states during what year?

1956

Explanation:

The Federal-Aid Highway Act of 1956. It took several years of wrangling, but a new Federal-Aid Highway Act passed in June 1956. The law authorized the construction of a 41,000-mile network of interstate highways that would span the nation. It also allocated $26 billion to pay for them.

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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).