A secular leader can be any leader that does not allow the church to interfere with the business of the country. Secularization is separating the church from the state, so a secular American leader can be pretty much anyone from recent history like Obama, or Bush, or Reagan, or even Kennedy who although sometimes attacked for his Catholicism, was still secular and did not mix his beliefs with the state.
This comes across like a question where you are being asked to state your opinion. Think about the exam system and what it was used for in history and in ancient dynasties/civilizations, and form your opinion.
Brown V. Board of Education expanded the rights of American CItizens by giving African American's permission to go to white school.
One negative impact would be people or citizens of the Panama would dislike that Indigenous people can come over into the Panama and the trading would extend until free trade without quotas or tariffs.
Please spell correctly and world war 1 was a total war :)
