U. S. farmers are allowed to obtain irrigation water from federal dam projects at very low prices to grow rice in the California desert. These companies must promise to sell 90% of their rice to buyers in Asia. What type of trade barrier is this? Pls explain, and tell me what type of barrier this is

first, the romans stayed isolated because they had to defend their own territories from neighboring cities that were harassing them, like the etruscans. second, once the romans managed to defeat their neighbors, and started to expand their territory, they started to build roads and bridges. finally, now that the romans have covered their territory with roads functioning as highways, they could mobilize their legions faster to assemble larger military units in a specific place

answer; (true);

she recieved a treatment not thought to be specifically effective in treating her disorder.