Which of these is the most likely way long-term economic growth takes place?

The correct answer is  increased in labor productivity growth. A measure of the amount of output produced by a given amount of inputs in a specific period of time is what we define as productivity. Whereas, an investment in improving the skill level of labor is considered an investment in the human capital. If a government wanted to improve the productivity of its human resources it could expand funding and opportunities for vocational training.

could you use this to with a topic?

the key difference between a democracy and a republic lies in the limits placed on government by the law, which has implications for minority rights. both forms of government tend to use a representational system — i.e., citizens vote to elect politicians to represent their interests and form the government.

the right answer is the third one: turnpikes went short distances to connect markets. turnpikes, also known as toll roads, were very important for trade and transportation (of people, goods and products) in the 19th century, coinciding with the expansion towards the west. they contributed significantly to the economic development of the united states.