What does this line mean? “Darkness cannot drive out darkness, only light can do that. Hate cannot drive out hate, only love can do that.”

to me it means only positives can drawn out negatives because negatives can't drawn out each other

Explanation:

hope it make since and it helped

an effect of the steamboat's popularity was that people began building canals in the united states and europe. this was done to find another way to transport goods across the country and in that time, transportation using the river was very slow and dangerous. it depended entirely on manpower and the current of the river. that all changed in the late 1700's when steamboats were introduced. they soon revolutionized travel and trade through the river and dominated the waterways. eventually, other means of transportation took over from the steamboats, but there was a time that they the united states to expand to the west.

they are the executive, (president and about 5,000,000 workers) legislative (senate and house of representatives) and judicial (supreme court and lower courts). the president of the united states administers the executive branch of our government.