3. factors that influence international trade in the 1950s, imports and exports of goods and services constituted roughly 4% to 5% of u. s. gdp. in recent years, exports have accounted for approximately 12% of gdp, while imports have more than tripled to over 15% of gdp. which of the following to explain the increase in international trade and finance since the 1950s? check all that apply. the widespread use of the internet to conduct business changes in property rights better high-speed rail lines international trade agreements such as the general agreement on tariffs and trade (gatt)