"Here are many shops of artisans and merchants, especially of those that weave linen and cotton cloth... The inhabitants, and especially strangers living
there are exceedingly rich. Corn, cattle, milk, and butter in this region are in
great abundance. Here are great store of doctors, judges, priests, and other
learned men, that are bountifully maintained at the king's cost and charges,
and here are brought manuscripts or written books out of Barbary, which are
sold for more money than any other merchandise. The inhabitants are people
of gentle and cheerful disposition, and spend a great part of the night singing
and dancing through all the streets of the city" - Journal entry from Leo
Africanus, year 1510.
This source offers a description of Timbuktu, Mall in Africa in the year 1510.
Based on what you know about primary and secondary sources, which of
them is this source and ple of? (Use the SS 101 PRESENTATION If you
need a remindert)

levels of production can be increased by technology while holding labor and capital constant, because increased technology makes the production process more efficient. subsequently, the lras curve is almost a vertical line, that can shift to the right, with an increase in technology.

the relationship between the lras curve and the ppc is that both can make the economy could grow. the ppc achieves that when it shifts outward because of more resources or technological advances while the lras curve shifts if more resources are developed or if there are technological advances.

the lras curve is a vertical line at an output level that represents the number of goods and services a nation can produce over a sustained period using all of its productive resources as efficiently as possible with all of the current technology available to it.

the production possibilities frontier (ppf) is a graphical device that is used for economic analysis of production decisions because the ppf measures the maximum possible combinations of two goods that an economy is capable of producing with its currently available resources and technology.

answer; protectionism fosters competition and keeps price regulated;

answer; /// the above statement is ( true);