What is one significant way transportation changed in the united states in the first half of the nineteenth century

Answer:

The transportation system in early United States was what helped the nation grow. Especialy in the 19th century the States had seen a rapid development in the transportation sector. First it started with the rivers and the roads. The canals and the railroad enabled the people and travellers to transport the agricultural and the manufactured goods. This helped the famers and the manufacturers to easily move their goods between farms and towns. The distinct local and regional economic growth of the United States, back in the day, had a lot to do with the networking and transportation links.

angle a = 40.6°

step-by-step explanation:

for any right angle triangle we know the pythagoras theorem reveals

hypotenuse² = height²+base²

by this formula we will calculate the length of hypotenuse

h² = 6²+7²

⇒ h =√36+49 = √85 = 9.22

now from the given triangle sin a = height/ hypotenuse

                                                sin a = 6/9.22 = 0.651

therefore

so angle a = 40.6°