Mumbai, April 29 -- Euro area economic confidence eased to a four-month low in April largely due to the trade tariff threats, survey data from the European Commission showed on Tuesday. The economic sentiment index dropped to 93.6 in April from 95.0 in the previous month. Sentiment eroded across all sectors in April. Among the big-four economies, morale fell sharply in Italy, while it improved slightly in Germany and Spain. At the same time, the indicator remained broadly stable in France. The industrial sentiment index dipped moderately to -11.2 in April from -10.7 in March while services confidence index slid to 1.4 from 2.2. Consumer confidence also dropped as initially estimated in April. The index dropped to -16.7 from -14.5 a month ag...