The role of the president "to lead the country" is very important.
Without a leader, we would be divided, and "united we stand, divided we fall"
its a simple as that, without a leader, we would be a lot more divided than we are now and without the president, well, there might be chaos
hope this helps
Manifest Destiny is the belief that Americans were destined to expand across North America from coast to coast.
The Emancipation Proclamation is an executive order by Abraham Lincoln freeing the slaves.
The Monroe Doctrine was a United States policy of opposing European colonialism into the Americas.
Lastly, The Louisiana Purchase was the purchase of the Louisiana territory by the US from France.
Manifest Destiny is the best answer.
Answer:
Seth Boyden and the ideas of manufacturing leather, railroads, and the first plastic.
Explanation:
Newark's rapid growth began in the early 19th century, much of it due to a Massachusetts transplant named Seth Boyden. Boyden came to Newark in 1815, and immediately began a torrent of improvements to leather manufacture, culminating in the process for making patent leather. Boyden's genius led to Newark's manufacturing nearly 90% of the nation's leather by 1870, bringing in $8.6 million in revenue to the city in that year alone. In 1824, Boyden, bored with leather, found a way to produce malleable iron. Newark also prospered by the construction of the Morris Canal in 1831. The canal connected Newark with the New Jersey hinterland, at that time a major iron and farm area. Railroads arrived in 1834 and 1835. A flourishing shipping business resulted, and Newark became the area's industrial center. By 1826, Newark's population stood at 8,017, ten times their 1776 number. The middle 19th century saw continued growth and diversification of Newark's industrial base. The first commercially successful plastic — Celluloid — was produced in a factory on Mechanic Street by John Wesley Hyatt. Hyatt's Celluloid found its way into Newark-made carriages, billiard balls, and dentures.
