what crisis took place here?
The ERM crises.
Maastricht Treaty
In Britain the Maastricht rebellion drew on the experience of Black Wednesday. 
who is kiliaen van rensselaer (merchant)? A Dutch diamond and pearl merchant. where are the above mentioned people from? UNANSWERABLE where was this person born? Hasselt, Overijssel, Netherlands. what is the history behind this first mentioned town? During the Middle Ages, it became one of the free cities of the county of Loon. what are the transport available here? Transport by bus, and train. where did the last mentioned country name originate from? UNANSWERABLE what is the geology behind this land mentioned latter? It is mostly composed of deltaic, coastal and eolian derived sediments during the Pleistocene glacial and interglacial periods. what happened here during the prehistoric times? The oldest human traces were found in higher soils, near Maastricht, from what is believed to be about 250,000 years ago. what happened after world war ii to this place where human traces were found? Several European institutions found their base in Maastricht. In 1981 and 1991 European Councils were held in Maastricht, the latter one resulting a year later in the signing of the Maastricht Treaty, leading to the creation of the European Union and the euro. what is the ratification of this treaty mentioned? In Ireland, the Eleventh Amendment of the Constitution, allowing the state to ratify the Treaty, was approved in a referendum held on 18 June 1992.
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Maastricht Treaty [SEP] The ERM crises
In Britain the Maastricht rebellion drew on the experience of Black Wednesday. On 16 September 1992 the British government had been forced to withdraw the pound sterling from the European Exchange Rate Mechanism (ERM), after a failed and costly attempt to keep the pound above its mandated exchange rate limit. Sterling's release from the ERM was then followed in the UK by an economic recovery and a significant fall in unemployment. The ERM was the centrepiece of the European Monetary System (EMS), set up on voluntary basis in 1978 to reduce the "barrier" that exchange-rate volatility presented for intra-Community commerce (and for the management of payments under the Common Agricultural Policy).