How was the grand canal central to the reunification of china in the 7th century and to its continued development through the 12th century?

The Grand Canal was key to China's reunification as it linked both its huge waterways to irrigate and drain China's agricultural zones. Thanks to this, which represented the longest waterway made by man, China's agricultural system prospered, and the population in agricultural areas has grown. Ships with provisions navigated through the canal, boosting the creation of huge urban areas next to its shores, which otherwise would have not been able to receive supplies with such ease.

answer: alexander hamilton

explanation: alexander hamilton was george washington's right hand man. he took an early role in the militia as the american revolutionary war began. in 1777, he became a senior aide to general washington in running the new continental army.

in 1862, president lincoln's emancipation proclamation opened the door for african americans to enlist in the union army. although many had wanted to join the war effort earlier, they were prohibited from enlisting by a federal law dating back to 1792.

explanation: