The Spain frontiers were closed and all the revolutionary books were forbidden, but hwen the Napoleon's army entered Spain most of ilustrated people knew the ideals of the revolution.
No Frontiers was created in 1989.
The New Frontiers ended in 2008.
The New Frontiers was created in 2006.
The Frontiers of Criticism was created in 1956.
Frontiers - magazine - was created in 1982.
Frontiers in Zoology was created in 2004.
Star Frontiers happened in 1982.
Flaming Frontiers was created in 1938.
Philosophical Frontiers was created in 2006.
The concept of "frontiers" can vary based on context, but generally, there are numerous frontiers in terms of geographical, political, cultural, and economic boundaries. In a political context, there are about 195 countries globally, each with its own frontiers defined by borders. Additionally, frontiers can refer to areas of exploration and development, such as technological or scientific frontiers. Therefore, the exact number of frontiers depends on the criteria used for classification.
No, Frontiers journals are not considered predatory.