Branches of International Public Law

8. International Space Law
national and international law governing activities in outer space
outer space generally begins at the lowest altitude above sea level at which objects can orbit the Earth, approximately 100 km (62 mi).
The inception of the field of space law began with the launch of the world's first artificial satellite by the Soviet Union in October 1957. Named Sputnik 1

9. Int’l Trade Law
Concerns trade between countries
Main organisation – World Trade Organisation (WTO)
Stems from medieval commercial laws lex mercatoria and lex maritima — respectively, "the law for merchants on land" and "the law for merchants on sea."
Modern trade law began after WWII with negotiation of a multilateral treaty to deal with trade in goods: the General Agreement on Tariffs and Trade (GATT).
…