Sceptics of Globalization Affirm That Economic Integration Was High Already

Sceptics of globalization affirm that economic integration was high already in the 19^th century. Others argue that the character of integration has changed from shallow to deep integration. What is meant by that? Please select all that apply.

A) International trade is replaced by global production chains.
B) International trade dramatically expanded its geographical scope.
C) International trade is accompanied by an unknown level of labour and capital mobility.
D) International trade is increasingly taking place between unequal trading partners.