Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: (CNN) On a recent trip to Havana, I waited in my hotel lobby for my next meeting, sipping a cortado, and scrolling through emails surrounded by bustling businesspeople in every direction. It felt like a hotel in any global business capital. Yet a stark reminder of my surroundings -- aside from the physical realities of the charm of a boutique hotel in Cuba's Habana Vieja neighborhood -- was the immediate lack of any Internet connection as soon as I stepped outside the confines of the hotel. My stay in a casa particular (private house) the remainder of the week only heightened this reality, and my time spent coordinating roaming service yielded spotty results.Cuba's announcement of launching broadband Internet service in two pilot projects in Havana is historic, says Alana TumminoTummino: We're seeing beginning of end of Cuba's Internet isolation, but there's a long way to go 
 Question:The telecommunications sector has been an important part, or more precisely, a key pillar of President Barack Obama's opening to _, dating back to executive actions for this sector in 2009.

Cuba