What is the effect of import restrictions on supply?
a. they cause the available supply of goods to drop.
b. they cause the available supply of goods to rise.
c. they often cause supply to rise steeply and then drop.
d. they usually do not have any lasting effect on supply.

The first answer is correct (A).

If a good sold in one country is imported from another country, a restriction on the importation of that good will cause a drop in supply.

Note: The only condition capable of refuting this hypothesis occurs if the good is also produced by the national industry and the import is restricted in order to protect the domestic producer of the good. In that case, the offer could even increase.

the correct answer is the following is a list of inventions made in the medieval islamic world, especially during the "islamic golden age" (8th to 13th centuries),[1][2] as well as the late medieval period, especially in the emirate of granada and the ottoman empire.

science and technology in the islamic world adopted and preserved knowledge and technologies from contemporary and earlier civilizations, including persia, india, china, and greece-roman antiquity, while making a number of improvements and innovations.

dude the first thing it says is that copied answers will get a zero. plus it would take anyone on an incredibly long time to answer. ive seen 2 people asking the exact same question and their questions got taken down. i have the assignment too, and im in the progress of doing it. i suggest going to a more private website, because this is the first place teachers look.