ano ang tawag sa panahon na tumagal ng halos 300 taon na naging palasak ang digmaan ng mga ibat ibang kaharian

You're so correct: )

Anthropogenic hazards  are  hazards  caused by human  action or inaction. they are contrasted with  natural hazards.  anthropogenic  hazards may adversely affect humans, other organisms and  biomes  and  ecosystems. the frequency and severity of hazards are key elements in some  risk analysis  methodologies.[specify]  hazards may also be described in relation to the impact that they have. a hazard only exists if there is a pathway to exposure. as an example the center of the earth consists of molten material at very high temperatures which would be a severe hazard if contact was made with the core. however, there is no feasible way of making contact with the core, therefore the center of the earth currently poses no hazard.

a  natural hazardis a  natural phenomenon  that might have a negative effect on  humans  or the  environment. natural hazard events can be classified into two broad categories:   geophysical  and  biological. geophysical hazards  encompass geological and  meteorological  phenomena such as  earthquakes,  volcanic eruptions,  wildfires,  cyclonic storms,  floods,  droughts, and  landslides.  biological hazards  can refer to a diverse array of  disease,  infection, and  infestation.

many geophysical hazards are related; for example,  submarine earthquakes  can cause  tsunamis, and  hurricanes  can lead to  coastal flooding  and  erosion. floods and wildfires can result from a combination of geological,  hydrological, and climatic factors. it is possible that some natural hazards are intertemporally correlated as well.  an example of the distinction between a natural  hazard  and a  natural  disaster  is that the  1906 san francisco earthquake  was a disaster, whereas living on a  fault  line is a hazard. some natural hazards can be provoked or affected by  anthropogenic processes  (e.g. land-use change, drainage and construction).

Sa kalagitnaan ng ika-18 na siglo

yun po yung alam ko : ) 

Hinati ni pope alexander vi ang mundo,dahil sa lumalalang paligsahan na namamagitan sa portugal at spain. nag palabas siya ng kautusan o papal bull at gumuhit ng demarcation line mula sa gitnang atlantiko na nagpapahiwatig na ang kalupaan at katubigan na matatagpuan sa kanlurang bahagi ng linya ay para sa spain at ang silangang bahagi ay para sa portugal.