National borders, significance

A significant amount of lead emitted in a country is transported beyond the national borders contributing to the trans-boundary transport. In 2002 as much as 4.8 kt (around 60% of total anthropogenic emission) of atmospheric lead, emitted in Europe were involved in transport across state borders. Absolute magnitudes of lead transported outside countries vary substantially from country to country. It was calculated as difference between national emission and deposition to the country. This magnitude depends on national emission, size of the territory, climatic conditions and spatial distribution of emission sources within the country. 

Each country is not only a receptor but also a source of the trans-boundary transport. As much as 153 t (60% of anthropogenic emission in Europe) of cadmium, emitted in Europe, leaves the territory of the counties and is involved in the long-range transport. The highest absolute value—30 t/yr—of cadmium transported across national borders was obtained for Poland. The significant exporters of cadmium are Spain, the Russian Federation, Romania and Italy. Nearly 40 t of cadmium is transported outside the European Union. Besides, only nine countries control more than 75% of cadmium trans-boundary transport. 

International Coordination Annex Describes activities taken in coordination with international partners for public health messaging, monitoring, and responding to an Incident of National Significance that may transcend U.S. borders. The U.S. Department of State is the coordinating agency for this annex. 

For instance, Nixon told Mao that the United States and the PRC did not want to dominate each other or to reach out and control the world, but this cannot be said of some other nations and he observed to Zhou that China was so significant a power that the Soviet Union has more units on its border with China than it does on the border with Western Europe. RN-Mao memcon, 21 February 1972, in Burr, Kissinger Transcripts, p. 64 RN-Zhou memcon, 21 February 1972, p. 10. 

States have few incentives to promote cooperation within industries which are national or global in scope but when large segments of an industry are clustered within one state s borders, the performance of that cluster has a significant impact on that state s economy. This describes the "Polymer Valley" in Northeastern Ohio. Although polymers is certainly a global field, the concentration of academic and industrial activity in Northeastern Ohio makes it worth substantial investment by the State. 

In contrast to current United States oil production and use patterns, the United States is not a significant importer of natural gas. Trade agreements with Canada and with Mexico are responsible for the import of natural gas but these are more of a convenience for the Border States rather than for the nation as a whole. 

---