Used to express 'if it were the case', 'if we assume'.
The ～とすれば grammar point is used to express an assumption or hypothetical condition. It presents a premise and then examines a possible effect or ramification. It can be translated as 'if we assume', 'if we consider', etc. in English. The formation varies based on whether it's used with a verb, an い-adjective, a な-adjective, or a noun.