Atreaty requires a two-thirds senate ratification vote. presidents often use to avoid this challenge to their foreign policy.

Executive agreement
An executive agreement is an agreement between the heads of government of two or more nations that has not been ratified by the legislature as treaties are ratified. Executive agreements are considered politically binding to distinguish them from treaties which are legally binding.

Hello.the answer is: b) folsom culture.  actually, it was replaced by a number of culture, and folsom was one of those. other included gainey, cumberland and redstone.have a nice day