In the case of the US vs Lopez B
The central government applying the concept of necessary & proper
a regional government maintaining is sovereignty.
A
D
с
It demonstrates the concept of full faith and credit
The regional government violating the concept of federalism
the Supreme Court exercising the Supremacy Clause

the year 2019 marks the 2115th anniversary of his birth.

it is the dominance of   the spanish language and roman catholic region in mexico, french being the official language of several african countries, and the existence of a western-style government in south asian countries

pan-africanism or pan-africanism is a political, philosophical, cultural and social movement that promotes african twinning, the defense of the rights of african people and the unity of africa under a single sovereign state, for all africans, both africa as of the african diasporas.