Source: Advice given in 1500 by the Muslim merchants of Calicut to the Hindu ruler of Calicut concerning the
arrival of the second Portuguese expedition to the city. Recorded in the History of the Discovery and Conquest of
India by the Portuguese by Fernão Lopes de Castanheda, a Portuguese historian, published in 1551.

Yes, the Muslim merchants of Calicut given advise to the hindu ruler of calicut in order to save his kingdom from Portuguese.

Explanation:

In 1500, Portuguese comes to the Indian subcontinent through the calicut city in the form of traders. For their arrival, the Muslim merchants of the calicut city wrote a letter to the Hindu ruler in order to given no place to Portuguese for trading because the Muslim merchants realized the main purpose of the arrival of Portuguese. He thought that these Portuguese comes to the city in order to capture it because it is a big city where most of the trade occurs through water.

what are local authorities doing to fix the problem

explanation: what are local authorities doing to fix the problem

union blockade

explanation:

the union blockade in the american civil war was a naval strategy by the united states to prevent the confederacy from trading.

the blockade was proclaimed by president abraham lincoln in april 1861, and required the monitoring of 3,500 miles (5,600 km) of atlantic and gulf coastline, including 12 major ports, notably new orleans and mobile. those blockade runners fast enough to evade the union navy could only carry a small fraction of the supplies needed. they were operated largely by british citizens, making use of neutral ports such as havana, nassau and bermuda. the union commissioned around 500 ships, which destroyed or captured about 1,500 blockade runners over the course of the war.