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 help to explain the increase in international trade and finance since the 1950s?Check all that apply.

Changes in property rights

A shift toward trading lighter, more easily transported goods

Services such as web conferencing and teleconferencing that facilitate international meetings

International trade agreements that lower tariffs and import quotas