Secondary; The events are 100 years apart. There is virtually no chance of it being primary.
Belgium's ports were close to the British coast and German control of Belgium would have been seen as a serious threat to Britain.
It was founded December 29th 1845. Mexico control the territory until 1836 when Texas won its independence becoming an independent republic hope I get brainiest. Texas join the Union as the 28th state. the states annexation it set off a chain of events it led to the war of Mexican- American war in 1846