Which of the following events has the least historical significance, in terms of abraham lincoln's presidency?

a. abraham lincoln delivering the gettysburg address
b. abraham lincoln issuing the emancipation proclamation
c. abraham lincoln writing a letter to the widow of a union soldier
d. abraham lincoln lobbying congress to pass the thirteenth amendment

The answer would be C.

Explanation:

This is because Abraham Lincoln's Gettysburg Address became very well known. The emancipation proclamation was saying that Lincoln would free the slaves. The last choice was also something Lincoln did that had a big impact because this is were the former slaves were going to be able to be free.

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.

b.

one company controls all the means of production of a product.

~coco