Castro's successful visits to Harlem and the Bronx, his speech to the United Nations General Assembly, and the October 21 march of 3,000 against U.S. policy and subsequent picket lines at Cuba's UN mission in defense of the revolution - all these events dealt blows to the U.S. government's unceasing efforts to isolate and slander Cuba.

Choose your answer: based on the paragraph above can we conclude that "Castro had many other successful events that dealt blows to the US government's efforts to isolate Cuba."?

Options are: (a). Yes (b). It's impossible to say (c). No
I think the answer is
(b).