Answer:
1st question what damage was caused by the tsunami in the Maldives: Flooding caused by the tsunami wiped out electricity on many islands, destroying also their communication links. Water supply was disrupted in about 15% of the islands and 25% had major damage to the essential infrastructure such as jetties and harbors that links these islands with Malé
2and question What was built around the capital island to help prevent such widespread damage from situations like this in the future?: In response, the nation has turned to geo-engineering, building artificial and reclaimed islands such as the controversial Thilafushi, a landfill island purpose-built to cope with the country's waste.
Explanation: Hope it helps! Have a nice day!