In April 2017, diplomatic relations were re established after a gap of 37 years between Cuba and which other country?

Introduction / Context:
Diplomatic relations between countries can be broken and later restored due to political changes. In April 2017, Cuba re established formal relations with a particular country after a long gap of 37 years. This question checks your awareness of recent world affairs and international diplomacy by asking you to identify that country from the options provided.

Given Data / Assumptions:

• The event occurred in April 2017.
• It involves diplomatic ties being re established after 37 years.
• The countries involved are Cuba and one of the listed options.
• Options are India, Morocco, Sri Lanka, and USA.

Concept / Approach:
The key is to recall specific international news from 2017. While Cuba relations with the USA also improved in the previous decade, the detailed fact in this question refers to the restoration of ties with Morocco, a North African country. Cuba and Morocco had cut ties decades earlier, and their decision to restore them in 2017 was widely reported. India and Sri Lanka have maintained relatively stable ties with Cuba, and United States relations are associated with a different timeline and context.

Step-by-Step Solution:
Step 1: Focus on the phrase re established after 37 years, which suggests a long suspension of diplomatic relations. Step 2: Recall that Cuba and Morocco severed ties in the past and announced restoration of relations in April 2017. Step 3: Consider that Cuba and India did not have such a long break in relations. Step 4: Understand that although there were major developments between Cuba and the USA, the timeline and description in the question point to Morocco. Step 5: Choose Morocco as the correct answer.

Verification / Alternative check:
You can verify by recalling news summaries of 2017 that mention Cuba and Morocco re opening embassies and resuming full diplomatic ties. Those reports specifically mentioned the 37 year break, which matches the detail in this question. The improvement in USA Cuba relations centered around the reopening of embassies in 2015, not 2017, which further confirms that the question is about Morocco.

Why Other Options Are Wrong:
India: Maintains diplomatic relations with Cuba and did not experience a 37 year suspension that needed restarting in 2017.
Sri Lanka: Also has long standing ties with Cuba without such a long break.
USA: Relations with the United States have seen ups and downs, but the landmark restoration of embassy level relations occurred roughly in 2015, and the question specifically highlights 37 years and April 2017, which matches Morocco.

Common Pitfalls:
Many students see Cuba in a question and immediately think about the United States because of the long history of tension between those countries. This can lead to misreading the date and the detail about 37 years. The best way to avoid this is to carefully match all given facts in the question with what you remember from current affairs, not just one keyword.

Final Answer:
In April 2017, Cuba re established diplomatic relations after 37 years with Morocco.