Probably <span>d.they wanted to protect their political and economic interests
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King Ferdinand and Queen Isabella of Spain sponsored Christopher Columbus's first voyage in 1492.
If you are talking about the development of political parties, then the issue that led it to them was “the struggle over ratification of the federal Constitution of 1787” (loc.gov).
Federalists, such as Alexander Hamilton, wanted a strong, central government and the Anti-Federalists, like Thomas Jefferson, “advocated states’ rights instead of centralized power”. (Library of Congress)
Conventions are meeting that delegates have one famous convention is the constitutional convention. And if your talking about the fun conventions like the science ones or beauty conventions those are like party anyone is invited to
If I remember correctly I would say D but I could be wrong
